TY - JOUR

T1 - Fast manipulation of Bose-Einstein condensates with an atom chip

AU - Corgier, R.

AU - Amri, S.

AU - Herr, W.

AU - Ahlers, H.

AU - Rudolph, J.

AU - Guéry-Odelin, D.

AU - Rasel, E. M.

AU - Charron, E.

AU - Gaaloul, N.

N1 - Funding information: This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Energy (BMWi) due to an enactment of the German Bundestag under Grant No. DLR 50WM1552-1557 (QUANTUS-IV-Fallturm). We also acknowledge the use of the computing cluster GMPCS of the LUMAT federation (FR 2764 CNRS). We acknowledge CINES, France for providing access and support to their computing platform Occigen under project AP-010810188. We wish to thank the Collaborative Research Center geo-Q of the Deutsche Forschungsgemeinschaft (SFB 1128), the QUEST-Leibniz-Forschungsschule (QUEST-LFS) and acknowledge financial support from Niederschsisches Vorab through the Quantum-and Nano-Metrology (QUANOMET) initiative within the project QT3. RC is grateful to the German Foreign Academic Exchange (DAAD) for partially supporting his research activities in Germany and to the IP@Leibniz program of the Leibniz University of Hanover for travel grants supporting his stays in France. RC and NG acknowledge mobility support from the Q-SENSE project, which has received funding from the European Union’s Horizon 2020 Research and Innovation Staff Exchange (RISE) Horizon 2020 program under Grant Agreement Number 691156. Additional mobility funds were thankfully made available through the bilateral exchange project PHC-Procope. We thank Sina Loriani, Jan-Niclas Siemß, and Tammo Sternke for valuable discussions. NG expresses out appreciation to Christian Schubert for sharing his expertise during the course of this research. The publication of this article was funded by the Open Access Fund of the Leibniz Universität Hannover.

PY - 2018/5

Y1 - 2018/5

N2 - We present a detailed theoretical analysis of the implementation of shortcut-to-adiabaticity protocols for the fast transport of neutral atoms with atom chips. The objective is to engineer transport ramps with durations not exceeding a few hundred milliseconds to provide metrologically relevant input states for an atomic sensor. Aided by numerical simulations of the classical and quantum dynamics, we study the behavior of a Bose-Einstein condensate in an atom chip setup with realistic anharmonic trapping. We detail the implementation of fast and controlled transports over large distances of several millimeters, i.e. distances 1000 times larger than the size of the atomic cloud. A subsequent optimized release and collimation step demonstrates the capability of our transport method to generate ensembles of quantum gases with expansion speeds in the picokelvin regime. The performance of this procedure is analyzed in terms of collective excitations reflected in residual center of mass and size oscillations of the condensate. We further evaluate the robustness of the protocol against experimental imperfections.

AB - We present a detailed theoretical analysis of the implementation of shortcut-to-adiabaticity protocols for the fast transport of neutral atoms with atom chips. The objective is to engineer transport ramps with durations not exceeding a few hundred milliseconds to provide metrologically relevant input states for an atomic sensor. Aided by numerical simulations of the classical and quantum dynamics, we study the behavior of a Bose-Einstein condensate in an atom chip setup with realistic anharmonic trapping. We detail the implementation of fast and controlled transports over large distances of several millimeters, i.e. distances 1000 times larger than the size of the atomic cloud. A subsequent optimized release and collimation step demonstrates the capability of our transport method to generate ensembles of quantum gases with expansion speeds in the picokelvin regime. The performance of this procedure is analyzed in terms of collective excitations reflected in residual center of mass and size oscillations of the condensate. We further evaluate the robustness of the protocol against experimental imperfections.

KW - atom chip

KW - atom interferometry

KW - Bose-Einstein condensate

KW - delta-kick collimation

KW - shortcut-to-adiabaticity

UR - http://www.scopus.com/inward/record.url?scp=85047989283&partnerID=8YFLogxK

U2 - 10.48550/arXiv.1712.04820

DO - 10.48550/arXiv.1712.04820

M3 - Article

AN - SCOPUS:85047989283

VL - 20

JO - New journal of physics

JF - New journal of physics

SN - 1367-2630

IS - 5

M1 - 055002

ER -