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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.08183">arXiv:2310.08183</a> <span> [<a href="https://arxiv.org/pdf/2310.08183">pdf</a>, <a href="https://arxiv.org/format/2310.08183">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> </div> <p class="title is-5 mathjax"> Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/gr-qc?searchtype=author&query=Abend%2C+S">Sven Abend</a>, <a href="/search/gr-qc?searchtype=author&query=Allard%2C+B">Baptiste Allard</a>, <a href="/search/gr-qc?searchtype=author&query=Alonso%2C+I">Iv谩n Alonso</a>, <a href="/search/gr-qc?searchtype=author&query=Antoniadis%2C+J">John Antoniadis</a>, <a href="/search/gr-qc?searchtype=author&query=Araujo%2C+H">Henrique Araujo</a>, <a href="/search/gr-qc?searchtype=author&query=Arduini%2C+G">Gianluigi Arduini</a>, <a href="/search/gr-qc?searchtype=author&query=Arnold%2C+A">Aidan Arnold</a>, <a href="/search/gr-qc?searchtype=author&query=A%C3%9Fmann%2C+T">Tobias A脽mann</a>, <a href="/search/gr-qc?searchtype=author&query=Augst%2C+N">Nadja Augst</a>, <a href="/search/gr-qc?searchtype=author&query=Badurina%2C+L">Leonardo Badurina</a>, <a href="/search/gr-qc?searchtype=author&query=Balaz%2C+A">Antun Balaz</a>, <a href="/search/gr-qc?searchtype=author&query=Banks%2C+H">Hannah Banks</a>, <a href="/search/gr-qc?searchtype=author&query=Barone%2C+M">Michele Barone</a>, <a href="/search/gr-qc?searchtype=author&query=Barsanti%2C+M">Michele Barsanti</a>, <a href="/search/gr-qc?searchtype=author&query=Bassi%2C+A">Angelo Bassi</a>, <a href="/search/gr-qc?searchtype=author&query=Battelier%2C+B">Baptiste Battelier</a>, <a href="/search/gr-qc?searchtype=author&query=Baynham%2C+C">Charles Baynham</a>, <a href="/search/gr-qc?searchtype=author&query=Quentin%2C+B">Beaufils Quentin</a>, <a href="/search/gr-qc?searchtype=author&query=Belic%2C+A">Aleksandar Belic</a>, <a href="/search/gr-qc?searchtype=author&query=Beniwal%2C+A">Ankit Beniwal</a>, <a href="/search/gr-qc?searchtype=author&query=Bernabeu%2C+J">Jose Bernabeu</a>, <a href="/search/gr-qc?searchtype=author&query=Bertinelli%2C+F">Francesco Bertinelli</a>, <a href="/search/gr-qc?searchtype=author&query=Bertoldi%2C+A">Andrea Bertoldi</a>, <a href="/search/gr-qc?searchtype=author&query=Biswas%2C+I+A">Ikbal Ahamed Biswas</a>, <a href="/search/gr-qc?searchtype=author&query=Blas%2C+D">Diego Blas</a> , et al. (228 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.08183v1-abstract-short" style="display: inline;"> This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter and gravitational waves. The primary objective of the workshop was to lay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.08183v1-abstract-full').style.display = 'inline'; document.getElementById('2310.08183v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.08183v1-abstract-full" style="display: none;"> This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter and gravitational waves. The primary objective of the workshop was to lay the groundwork for an international TVLBAI proto-collaboration. This collaboration aims to unite researchers from different institutions to strategize and secure funding for terrestrial large-scale AI projects. The ultimate goal is to create a roadmap detailing the design and technology choices for one or more km-scale detectors, which will be operational in the mid-2030s. The key sections of this report present the physics case and technical challenges, together with a comprehensive overview of the discussions at the workshop together with the main conclusions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.08183v1-abstract-full').style.display = 'none'; document.getElementById('2310.08183v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Summary of the Terrestrial Very-Long-Baseline Atom Interferometry Workshop held at CERN: https://indico.cern.ch/event/1208783/</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.15412">arXiv:2211.15412</a> <span> [<a href="https://arxiv.org/pdf/2211.15412">pdf</a>, <a href="https://arxiv.org/format/2211.15412">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> </div> <p class="title is-5 mathjax"> STE-QUEST: Space Time Explorer and QUantum Equivalence principle Space Test </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/gr-qc?searchtype=author&query=Ahlers%2C+H">Holger Ahlers</a>, <a href="/search/gr-qc?searchtype=author&query=Badurina%2C+L">Leonardo Badurina</a>, <a href="/search/gr-qc?searchtype=author&query=Bassi%2C+A">Angelo Bassi</a>, <a href="/search/gr-qc?searchtype=author&query=Battelier%2C+B">Baptiste Battelier</a>, <a href="/search/gr-qc?searchtype=author&query=Beaufils%2C+Q">Quentin Beaufils</a>, <a href="/search/gr-qc?searchtype=author&query=Bongs%2C+K">Kai Bongs</a>, <a href="/search/gr-qc?searchtype=author&query=Bouyer%2C+P">Philippe Bouyer</a>, <a href="/search/gr-qc?searchtype=author&query=Braxmaier%2C+C">Claus Braxmaier</a>, <a href="/search/gr-qc?searchtype=author&query=Buchmueller%2C+O">Oliver Buchmueller</a>, <a href="/search/gr-qc?searchtype=author&query=Carlesso%2C+M">Matteo Carlesso</a>, <a href="/search/gr-qc?searchtype=author&query=Charron%2C+E">Eric Charron</a>, <a href="/search/gr-qc?searchtype=author&query=Chiofalo%2C+M+L">Maria Luisa Chiofalo</a>, <a href="/search/gr-qc?searchtype=author&query=Corgier%2C+R">Robin Corgier</a>, <a href="/search/gr-qc?searchtype=author&query=Donadi%2C+S">Sandro Donadi</a>, <a href="/search/gr-qc?searchtype=author&query=Droz%2C+F">Fabien Droz</a>, <a href="/search/gr-qc?searchtype=author&query=Ecoffet%2C+R">Robert Ecoffet</a>, <a href="/search/gr-qc?searchtype=author&query=Ellis%2C+J">John Ellis</a>, <a href="/search/gr-qc?searchtype=author&query=Est%C3%A8ve%2C+F">Fr茅d茅ric Est猫ve</a>, <a href="/search/gr-qc?searchtype=author&query=Gaaloul%2C+N">Naceur Gaaloul</a>, <a href="/search/gr-qc?searchtype=author&query=Gerardi%2C+D">Domenico Gerardi</a>, <a href="/search/gr-qc?searchtype=author&query=Giese%2C+E">Enno Giese</a>, <a href="/search/gr-qc?searchtype=author&query=Grosse%2C+J">Jens Grosse</a>, <a href="/search/gr-qc?searchtype=author&query=Hees%2C+A">Aur茅lien Hees</a>, <a href="/search/gr-qc?searchtype=author&query=Hensel%2C+T">Thomas Hensel</a>, <a href="/search/gr-qc?searchtype=author&query=Herr%2C+W">Waldemar Herr</a> , et al. (28 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2211.15412v3-abstract-short" style="display: inline;"> An M-class mission proposal in response to the 2021 call in ESA's science programme with a broad range of objectives in fundamental physics, which include testing the Equivalence Principle and Lorentz Invariance, searching for Ultralight Dark Matter and probing Quantum Mechanics. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.15412v3-abstract-full" style="display: none;"> An M-class mission proposal in response to the 2021 call in ESA's science programme with a broad range of objectives in fundamental physics, which include testing the Equivalence Principle and Lorentz Invariance, searching for Ultralight Dark Matter and probing Quantum Mechanics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.15412v3-abstract-full').style.display = 'none'; document.getElementById('2211.15412v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">As submitted to the M7 call in July 2022, except updated for the recent (Sept. 2022) MICROSCOPE results, and new section 2.5 summarizing the information provided to ESA during the September 2022 audition</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2201.07789">arXiv:2201.07789</a> <span> [<a href="https://arxiv.org/pdf/2201.07789">pdf</a>, <a href="https://arxiv.org/format/2201.07789">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjqt/s40507-022-00147-w">10.1140/epjqt/s40507-022-00147-w <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/gr-qc?searchtype=author&query=Alonso%2C+I">Ivan Alonso</a>, <a href="/search/gr-qc?searchtype=author&query=Alpigiani%2C+C">Cristiano Alpigiani</a>, <a href="/search/gr-qc?searchtype=author&query=Altschul%2C+B">Brett Altschul</a>, <a href="/search/gr-qc?searchtype=author&query=Araujo%2C+H">Henrique Araujo</a>, <a href="/search/gr-qc?searchtype=author&query=Arduini%2C+G">Gianluigi Arduini</a>, <a href="/search/gr-qc?searchtype=author&query=Arlt%2C+J">Jan Arlt</a>, <a href="/search/gr-qc?searchtype=author&query=Badurina%2C+L">Leonardo Badurina</a>, <a href="/search/gr-qc?searchtype=author&query=Balaz%2C+A">Antun Balaz</a>, <a href="/search/gr-qc?searchtype=author&query=Bandarupally%2C+S">Satvika Bandarupally</a>, <a href="/search/gr-qc?searchtype=author&query=Barone%2C+B+C+B+M">Barry C Barish Michele Barone</a>, <a href="/search/gr-qc?searchtype=author&query=Barsanti%2C+M">Michele Barsanti</a>, <a href="/search/gr-qc?searchtype=author&query=Bass%2C+S">Steven Bass</a>, <a href="/search/gr-qc?searchtype=author&query=Bassi%2C+A">Angelo Bassi</a>, <a href="/search/gr-qc?searchtype=author&query=Battelier%2C+B">Baptiste Battelier</a>, <a href="/search/gr-qc?searchtype=author&query=Baynham%2C+C+F+A">Charles F. A. Baynham</a>, <a href="/search/gr-qc?searchtype=author&query=Beaufils%2C+Q">Quentin Beaufils</a>, <a href="/search/gr-qc?searchtype=author&query=Belic%2C+A">Aleksandar Belic</a>, <a href="/search/gr-qc?searchtype=author&query=Berge%2C+J">Joel Berge</a>, <a href="/search/gr-qc?searchtype=author&query=Bernabeu%2C+J">Jose Bernabeu</a>, <a href="/search/gr-qc?searchtype=author&query=Bertoldi%2C+A">Andrea Bertoldi</a>, <a href="/search/gr-qc?searchtype=author&query=Bingham%2C+R">Robert Bingham</a>, <a href="/search/gr-qc?searchtype=author&query=Bize%2C+S">Sebastien Bize</a>, <a href="/search/gr-qc?searchtype=author&query=Blas%2C+D">Diego Blas</a>, <a href="/search/gr-qc?searchtype=author&query=Bongs%2C+K">Kai Bongs</a>, <a href="/search/gr-qc?searchtype=author&query=Bouyer%2C+P">Philippe Bouyer</a> , et al. (224 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2201.07789v1-abstract-short" style="display: inline;"> We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.07789v1-abstract-full').style.display = 'inline'; document.getElementById('2201.07789v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2201.07789v1-abstract-full" style="display: none;"> We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. We review the current status of cold atom technologies and outline the requirements for their space qualification, including the development paths and the corresponding technical milestones, and identifying possible pathfinder missions to pave the way for missions to exploit the full potential of cold atoms in space. Finally, we present a first draft of a possible road-map for achieving these goals, that we propose for discussion by the interested cold atom, Earth Observation, fundamental physics and other prospective scientific user communities, together with ESA and national space and research funding agencies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.07789v1-abstract-full').style.display = 'none'; document.getElementById('2201.07789v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Summary of the Community Workshop on Cold Atoms in Space and corresponding Road-map: https://indico.cern.ch/event/1064855/</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> EPJ Quantum Technol. 9, 30 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.13273">arXiv:2110.13273</a> <span> [<a href="https://arxiv.org/pdf/2110.13273">pdf</a>, <a href="https://arxiv.org/format/2110.13273">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1116/5.0076502">10.1116/5.0076502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Testing the Universality of Free Fall using correlated $^{39}$K -- $^{87}$Rb interferometers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/gr-qc?searchtype=author&query=Barrett%2C+B">Brynle Barrett</a>, <a href="/search/gr-qc?searchtype=author&query=Condon%2C+G">Gabriel Condon</a>, <a href="/search/gr-qc?searchtype=author&query=Chichet%2C+L">Laure Chichet</a>, <a href="/search/gr-qc?searchtype=author&query=Antoni-Micollier%2C+L">Laura Antoni-Micollier</a>, <a href="/search/gr-qc?searchtype=author&query=Arguel%2C+R">Romain Arguel</a>, <a href="/search/gr-qc?searchtype=author&query=Rabault%2C+M">Martin Rabault</a>, <a href="/search/gr-qc?searchtype=author&query=Pelluet%2C+C">Celia Pelluet</a>, <a href="/search/gr-qc?searchtype=author&query=Jarlaud%2C+V">Vincent Jarlaud</a>, <a href="/search/gr-qc?searchtype=author&query=Landragin%2C+A">Arnaud Landragin</a>, <a href="/search/gr-qc?searchtype=author&query=Bouyer%2C+P">Philippe Bouyer</a>, <a href="/search/gr-qc?searchtype=author&query=Battelier%2C+B">Baptiste Battelier</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2110.13273v1-abstract-short" style="display: inline;"> We demonstrate how simultaneously-operated $^{39}$K -- $^{87}$Rb interferometers exhibiting a high level of correlation can be used to make competitive tests of the university of free fall. This work provides an overview of our experimental apparatus and data analysis procedure, including a detailed study of systematic effects. With a total interrogation time of $2T = 40$ ms in a compact apparatus… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.13273v1-abstract-full').style.display = 'inline'; document.getElementById('2110.13273v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.13273v1-abstract-full" style="display: none;"> We demonstrate how simultaneously-operated $^{39}$K -- $^{87}$Rb interferometers exhibiting a high level of correlation can be used to make competitive tests of the university of free fall. This work provides an overview of our experimental apparatus and data analysis procedure, including a detailed study of systematic effects. With a total interrogation time of $2T = 40$ ms in a compact apparatus, we reach a statistical uncertainty on the measurement of the E枚tv枚s parameter of $7.8 \times 10^{-8}$ after $2.4 \times 10^4$ s of integration. The main limitations to our measurement arise from a combination of wavefront aberrations, the quadratic Zeeman effect in $^{39}$K, parasitic interferometers in $^{87}$Rb, and the velocity sensitivity of our detection system. These systematic errors limit the accuracy of our measurement to $畏= 0.9(1.6) \times 10^{-6}$. We discuss prospects for improvements using ultracold atoms at extended interrogation times. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.13273v1-abstract-full').style.display = 'none'; document.getElementById('2110.13273v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> AVS Quantum Sci. 4, 014401 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1908.00802">arXiv:1908.00802</a> <span> [<a href="https://arxiv.org/pdf/1908.00802">pdf</a>, <a href="https://arxiv.org/format/1908.00802">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjqt/s40507-020-0080-0">10.1140/epjqt/s40507-020-0080-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/gr-qc?searchtype=author&query=El-Neaj%2C+Y+A">Yousef Abou El-Neaj</a>, <a href="/search/gr-qc?searchtype=author&query=Alpigiani%2C+C">Cristiano Alpigiani</a>, <a href="/search/gr-qc?searchtype=author&query=Amairi-Pyka%2C+S">Sana Amairi-Pyka</a>, <a href="/search/gr-qc?searchtype=author&query=Araujo%2C+H">Henrique Araujo</a>, <a href="/search/gr-qc?searchtype=author&query=Balaz%2C+A">Antun Balaz</a>, <a href="/search/gr-qc?searchtype=author&query=Bassi%2C+A">Angelo Bassi</a>, <a href="/search/gr-qc?searchtype=author&query=Bathe-Peters%2C+L">Lars Bathe-Peters</a>, <a href="/search/gr-qc?searchtype=author&query=Battelier%2C+B">Baptiste Battelier</a>, <a href="/search/gr-qc?searchtype=author&query=Belic%2C+A">Aleksandar Belic</a>, <a href="/search/gr-qc?searchtype=author&query=Bentine%2C+E">Elliot Bentine</a>, <a href="/search/gr-qc?searchtype=author&query=Bernabeu%2C+J">Jose Bernabeu</a>, <a href="/search/gr-qc?searchtype=author&query=Bertoldi%2C+A">Andrea Bertoldi</a>, <a href="/search/gr-qc?searchtype=author&query=Bingham%2C+R">Robert Bingham</a>, <a href="/search/gr-qc?searchtype=author&query=Blas%2C+D">Diego Blas</a>, <a href="/search/gr-qc?searchtype=author&query=Bolpasi%2C+V">Vasiliki Bolpasi</a>, <a href="/search/gr-qc?searchtype=author&query=Bongs%2C+K">Kai Bongs</a>, <a href="/search/gr-qc?searchtype=author&query=Bose%2C+S">Sougato Bose</a>, <a href="/search/gr-qc?searchtype=author&query=Bouyer%2C+P">Philippe Bouyer</a>, <a href="/search/gr-qc?searchtype=author&query=Bowcock%2C+T">Themis Bowcock</a>, <a href="/search/gr-qc?searchtype=author&query=Bowden%2C+W">William Bowden</a>, <a href="/search/gr-qc?searchtype=author&query=Buchmueller%2C+O">Oliver Buchmueller</a>, <a href="/search/gr-qc?searchtype=author&query=Burrage%2C+C">Clare Burrage</a>, <a href="/search/gr-qc?searchtype=author&query=Calmet%2C+X">Xavier Calmet</a>, <a href="/search/gr-qc?searchtype=author&query=Canuel%2C+B">Benjamin Canuel</a>, <a href="/search/gr-qc?searchtype=author&query=Caramete%2C+L">Laurentiu-Ioan Caramete</a> , et al. (107 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1908.00802v2-abstract-short" style="display: inline;"> We propose in this White Paper a concept for a space experiment using cold atoms to search for ultra-light dark matter, and to detect gravitational waves in the frequency range between the most sensitive ranges of LISA and the terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment for Dark Matter and Gravity Exploration (AEDGE), will also compl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.00802v2-abstract-full').style.display = 'inline'; document.getElementById('1908.00802v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1908.00802v2-abstract-full" style="display: none;"> We propose in this White Paper a concept for a space experiment using cold atoms to search for ultra-light dark matter, and to detect gravitational waves in the frequency range between the most sensitive ranges of LISA and the terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment for Dark Matter and Gravity Exploration (AEDGE), will also complement other planned searches for dark matter, and exploit synergies with other gravitational wave detectors. We give examples of the extended range of sensitivity to ultra-light dark matter offered by AEDGE, and how its gravitational-wave measurements could explore the assembly of super-massive black holes, first-order phase transitions in the early universe and cosmic strings. AEDGE will be based upon technologies now being developed for terrestrial experiments using cold atoms, and will benefit from the space experience obtained with, e.g., LISA and cold atom experiments in microgravity. This paper is based on a submission (v1) in response to the Call for White Papers for the Voyage 2050 long-term plan in the ESA Science Programme. ESA limited the number of White Paper authors to 30. However, in this version (v2) we have welcomed as supporting authors participants in the Workshop on Atomic Experiments for Dark Matter and Gravity Exploration held at CERN: ({\tt https://indico.cern.ch/event/830432/}), as well as other interested scientists, and have incorporated additional material. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.00802v2-abstract-full').style.display = 'none'; document.getElementById('1908.00802v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">V2 -- added support authors</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> KCL-PH-TH/2019-65, CERN-TH-2019-126 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> EPJ Quantum Technol. 7, 6 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1705.10475">arXiv:1705.10475</a> <span> [<a href="https://arxiv.org/pdf/1705.10475">pdf</a>, <a href="https://arxiv.org/format/1705.10475">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> </div> <p class="title is-5 mathjax"> Studies of general relativity with quantum sensors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/gr-qc?searchtype=author&query=Lefevre%2C+G">G. Lefevre</a>, <a href="/search/gr-qc?searchtype=author&query=Condon%2C+G">G. Condon</a>, <a href="/search/gr-qc?searchtype=author&query=Riou%2C+I">I. Riou</a>, <a href="/search/gr-qc?searchtype=author&query=Chichet%2C+L">L. Chichet</a>, <a href="/search/gr-qc?searchtype=author&query=Essayeh%2C+M">M. Essayeh</a>, <a href="/search/gr-qc?searchtype=author&query=Rabault%2C+M">M. Rabault</a>, <a href="/search/gr-qc?searchtype=author&query=Antoni-Micollier%2C+L">L. Antoni-Micollier</a>, <a href="/search/gr-qc?searchtype=author&query=Mielec%2C+N">N. Mielec</a>, <a href="/search/gr-qc?searchtype=author&query=Holleville%2C+D">D. Holleville</a>, <a href="/search/gr-qc?searchtype=author&query=Amand%2C+L">L. Amand</a>, <a href="/search/gr-qc?searchtype=author&query=Geiger%2C+R">R. Geiger</a>, <a href="/search/gr-qc?searchtype=author&query=Landragin%2C+A">A. Landragin</a>, <a href="/search/gr-qc?searchtype=author&query=Prevedelli%2C+M">M. Prevedelli</a>, <a href="/search/gr-qc?searchtype=author&query=Barrett%2C+B">B. Barrett</a>, <a href="/search/gr-qc?searchtype=author&query=Battelier%2C+B">B. Battelier</a>, <a href="/search/gr-qc?searchtype=author&query=Bertoldi%2C+A">A. Bertoldi</a>, <a href="/search/gr-qc?searchtype=author&query=Canuel%2C+B">B. Canuel</a>, <a href="/search/gr-qc?searchtype=author&query=Bouyer%2C+P">P. Bouyer</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1705.10475v1-abstract-short" style="display: inline;"> We present two projects aiming to probe key aspects of the theory of General Relativity with high-precision quantum sensors. These projects use cold-atom interferometry with the aim of measuring gravitational waves and testing the equivalence principle. To detect gravitational waves, a large multi-sensor demonstrator is currently under construction that will exploit correlations between three atom… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.10475v1-abstract-full').style.display = 'inline'; document.getElementById('1705.10475v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1705.10475v1-abstract-full" style="display: none;"> We present two projects aiming to probe key aspects of the theory of General Relativity with high-precision quantum sensors. These projects use cold-atom interferometry with the aim of measuring gravitational waves and testing the equivalence principle. To detect gravitational waves, a large multi-sensor demonstrator is currently under construction that will exploit correlations between three atom interferometers spread along a 200 m optical cavity. Similarly, a test of the weak equivalence principle is currently underway using a compact and mobile dual-species interferometer, which will serve as a prototype for future high-precision tests onboard an orbiting satellite. We present recent results and improvements related to both projects. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.10475v1-abstract-full').style.display = 'none'; document.getElementById('1705.10475v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 7 figures, to appear in "Proceedings of the 52nd Rencontres de Moriond on Gravitation"</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1412.2713">arXiv:1412.2713</a> <span> [<a href="https://arxiv.org/pdf/1412.2713">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10686-014-9433-y">10.1007/s10686-014-9433-y <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Design of a dual species atom interferometer for space </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/gr-qc?searchtype=author&query=Schuldt%2C+T">Thilo Schuldt</a>, <a href="/search/gr-qc?searchtype=author&query=Schubert%2C+C">Christian Schubert</a>, <a href="/search/gr-qc?searchtype=author&query=Krutzik%2C+M">Markus Krutzik</a>, <a href="/search/gr-qc?searchtype=author&query=Bote%2C+L+G">Lluis Gesa Bote</a>, <a href="/search/gr-qc?searchtype=author&query=Gaaloul%2C+N">Naceur Gaaloul</a>, <a href="/search/gr-qc?searchtype=author&query=Hartwig%2C+J">Jonas Hartwig</a>, <a href="/search/gr-qc?searchtype=author&query=Ahlers%2C+H">Holger Ahlers</a>, <a href="/search/gr-qc?searchtype=author&query=Herr%2C+W">Waldemar Herr</a>, <a href="/search/gr-qc?searchtype=author&query=Posso-Trujillo%2C+K">Katerine Posso-Trujillo</a>, <a href="/search/gr-qc?searchtype=author&query=Rudolph%2C+J">Jan Rudolph</a>, <a href="/search/gr-qc?searchtype=author&query=Seidel%2C+S">Stephan Seidel</a>, <a href="/search/gr-qc?searchtype=author&query=Wendrich%2C+T">Thijs Wendrich</a>, <a href="/search/gr-qc?searchtype=author&query=Ertmer%2C+W">Wolfgang Ertmer</a>, <a href="/search/gr-qc?searchtype=author&query=Herrmann%2C+S">Sven Herrmann</a>, <a href="/search/gr-qc?searchtype=author&query=Kubelka-Lange%2C+A">Andr茅 Kubelka-Lange</a>, <a href="/search/gr-qc?searchtype=author&query=Milke%2C+A">Alexander Milke</a>, <a href="/search/gr-qc?searchtype=author&query=Rievers%2C+B">Benny Rievers</a>, <a href="/search/gr-qc?searchtype=author&query=Rocco%2C+E">Emanuele Rocco</a>, <a href="/search/gr-qc?searchtype=author&query=Hinton%2C+A">Andrew Hinton</a>, <a href="/search/gr-qc?searchtype=author&query=Bongs%2C+K">Kai Bongs</a>, <a href="/search/gr-qc?searchtype=author&query=Oswald%2C+M">Markus Oswald</a>, <a href="/search/gr-qc?searchtype=author&query=Franz%2C+M">Matthias Franz</a>, <a href="/search/gr-qc?searchtype=author&query=Hauth%2C+M">Matthias Hauth</a>, <a href="/search/gr-qc?searchtype=author&query=Peters%2C+A">Achim Peters</a>, <a href="/search/gr-qc?searchtype=author&query=Bawamia%2C+A">Ahmad Bawamia</a> , et al. (32 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1412.2713v1-abstract-short" style="display: inline;"> Atom interferometers have a multitude of proposed applications in space including precise measurements of the Earth's gravitational field, in navigation & ranging, and in fundamental physics such as tests of the weak equivalence principle (WEP) and gravitational wave detection. While atom interferometers are realized routinely in ground-based laboratories, current efforts aim at the development of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.2713v1-abstract-full').style.display = 'inline'; document.getElementById('1412.2713v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.2713v1-abstract-full" style="display: none;"> Atom interferometers have a multitude of proposed applications in space including precise measurements of the Earth's gravitational field, in navigation & ranging, and in fundamental physics such as tests of the weak equivalence principle (WEP) and gravitational wave detection. While atom interferometers are realized routinely in ground-based laboratories, current efforts aim at the development of a space compatible design optimized with respect to dimensions, weight, power consumption, mechanical robustness and radiation hardness. In this paper, we present a design of a high-sensitivity differential dual species $^{85}$Rb/$^{87}$Rb atom interferometer for space, including physics package, laser system, electronics and software. The physics package comprises the atom source consisting of dispensers and a 2D magneto-optical trap (MOT), the science chamber with a 3D-MOT, a magnetic trap based on an atom chip and an optical dipole trap (ODT) used for Bose-Einstein condensate (BEC) creation and interferometry, the detection unit, the vacuum system for $10^{-11}$ mbar ultra-high vacuum generation, and the high-suppression factor magnetic shielding as well as the thermal control system. The laser system is based on a hybrid approach using fiber-based telecom components and high-power laser diode technology and includes all laser sources for 2D-MOT, 3D-MOT, ODT, interferometry and detection. Manipulation and switching of the laser beams is carried out on an optical bench using Zerodur bonding technology. The instrument consists of 9 units with an overall mass of 221 kg, an average power consumption of 608 W (819 W peak), and a volume of 470 liters which would well fit on a satellite to be launched with a Soyuz rocket, as system studies have shown. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.2713v1-abstract-full').style.display = 'none'; document.getElementById('1412.2713v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">30 pages, 23 figures, accepted for publication in Experimental Astronomy</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1312.5980">arXiv:1312.5980</a> <span> [<a href="https://arxiv.org/pdf/1312.5980">pdf</a>, <a href="https://arxiv.org/format/1312.5980">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0264-9381/31/11/115010">10.1088/0264-9381/31/11/115010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> STE-QUEST - Test of the Universality of Free Fall Using Cold Atom Interferometry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/gr-qc?searchtype=author&query=Aguilera%2C+D">D. Aguilera</a>, <a href="/search/gr-qc?searchtype=author&query=Ahlers%2C+H">H. Ahlers</a>, <a href="/search/gr-qc?searchtype=author&query=Battelier%2C+B">B. Battelier</a>, <a href="/search/gr-qc?searchtype=author&query=Bawamia%2C+A">A. Bawamia</a>, <a href="/search/gr-qc?searchtype=author&query=Bertoldi%2C+A">A. Bertoldi</a>, <a href="/search/gr-qc?searchtype=author&query=Bondarescu%2C+R">R. Bondarescu</a>, <a href="/search/gr-qc?searchtype=author&query=Bongs%2C+K">K. Bongs</a>, <a href="/search/gr-qc?searchtype=author&query=Bouyer%2C+P">P. Bouyer</a>, <a href="/search/gr-qc?searchtype=author&query=Braxmaier%2C+C">C. Braxmaier</a>, <a href="/search/gr-qc?searchtype=author&query=Cacciapuoti%2C+L">L. Cacciapuoti</a>, <a href="/search/gr-qc?searchtype=author&query=Chaloner%2C+C">C. Chaloner</a>, <a href="/search/gr-qc?searchtype=author&query=Chwalla%2C+M">M. Chwalla</a>, <a href="/search/gr-qc?searchtype=author&query=Ertmer%2C+W">W. Ertmer</a>, <a href="/search/gr-qc?searchtype=author&query=Franz%2C+M">M. Franz</a>, <a href="/search/gr-qc?searchtype=author&query=Gaaloul%2C+N">N. Gaaloul</a>, <a href="/search/gr-qc?searchtype=author&query=Gehler%2C+M">M. Gehler</a>, <a href="/search/gr-qc?searchtype=author&query=Gerardi%2C+D">D. Gerardi</a>, <a href="/search/gr-qc?searchtype=author&query=Gesa%2C+L">L. Gesa</a>, <a href="/search/gr-qc?searchtype=author&query=G%C3%BCrlebeck%2C+N">N. G眉rlebeck</a>, <a href="/search/gr-qc?searchtype=author&query=Hartwig%2C+J">J. Hartwig</a>, <a href="/search/gr-qc?searchtype=author&query=Hauth%2C+M">M. Hauth</a>, <a href="/search/gr-qc?searchtype=author&query=Hellmig%2C+O">O. Hellmig</a>, <a href="/search/gr-qc?searchtype=author&query=Herr%2C+W">W. Herr</a>, <a href="/search/gr-qc?searchtype=author&query=Herrmann%2C+S">S. Herrmann</a>, <a href="/search/gr-qc?searchtype=author&query=Heske%2C+A">A. Heske</a> , et al. (41 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1312.5980v2-abstract-short" style="display: inline;"> The theory of general relativity describes macroscopic phenomena driven by the influence of gravity while quantum mechanics brilliantly accounts for microscopic effects. Despite their tremendous individual success, a complete unification of fundamental interactions is missing and remains one of the most challenging and important quests in modern theoretical physics. The STE-QUEST satellite mission… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.5980v2-abstract-full').style.display = 'inline'; document.getElementById('1312.5980v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1312.5980v2-abstract-full" style="display: none;"> The theory of general relativity describes macroscopic phenomena driven by the influence of gravity while quantum mechanics brilliantly accounts for microscopic effects. Despite their tremendous individual success, a complete unification of fundamental interactions is missing and remains one of the most challenging and important quests in modern theoretical physics. The STE-QUEST satellite mission, proposed as a medium-size mission within the Cosmic Vision program of the European Space Agency (ESA), aims for testing general relativity with high precision in two experiments by performing a measurement of the gravitational redshift of the Sun and the Moon by comparing terrestrial clocks, and by performing a test of the Universality of Free Fall of matter waves in the gravitational field of Earth comparing the trajectory of two Bose-Einstein condensates of Rb85 and Rb87. The two ultracold atom clouds are monitored very precisely thanks to techniques of atom interferometry. This allows to reach down to an uncertainty in the E枚tv枚s parameter of at least 2x10E-15. In this paper, we report about the results of the phase A mission study of the atom interferometer instrument covering the description of the main payload elements, the atomic source concept, and the systematic error sources. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.5980v2-abstract-full').style.display = 'none'; document.getElementById('1312.5980v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">21 pages, 5 figures</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 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