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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/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 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