期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 54, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6455/abf298
关键词
quantum gases; spatial light modulator; spin textures
资金
- ERC (Synergy UQUAM and TORYD)
- European Union [ANR-18-CE30-0010]
- Agence Nationale de la Recherche (ANR) [ANR-18-CE30-0010] Funding Source: Agence Nationale de la Recherche (ANR)
This study demonstrates the arbitrary control of density profile of a two-dimensional Bose gas by shaping the optical potential applied to the atoms. Using a digital micromirror device (DMD) directly imaged onto the atomic cloud through a high resolution imaging system, the research achieves an optical potential with arbitrary intensity profile and micron-scale resolution. The obtained density distribution is optimized with a feedback loop based on measured absorption images of the cloud, and arbitrary spin distributions are engineered through two-photon Raman transfer between internal ground states using the same device.
We demonstrate the arbitrary control of the density profile of a two-dimensional Bose gas by shaping the optical potential applied to the atoms. We use a digital micromirror device (DMD) directly imaged onto the atomic cloud through a high resolution imaging system. Our approach relies on averaging the response of many pixels of the DMD over the diffraction spot of the imaging system, which allows us to create an optical potential with an arbitrary intensity profile and with micron-scale resolution. The obtained density distribution is optimized with a feedback loop based on the measured absorption images of the cloud. Using the same device, we also engineer arbitrary spin distributions thanks to a two-photon Raman transfer between internal ground states.
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