Compensation of gravity on cold atoms by a linear optical potential
Compensation of gravity on cold atoms by a linear optical potential
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通过线性光学势补偿冷原子的重力
DOI：
10.1103/physrevresearch.2.013068
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发表时间：
2020
影响因子：
4.2
通讯作者：
Hirano Takuya
中科院分区：
文献类型：
--
作者：
Shibata Kosuke;Ikeda Hidehiko;Suzuki Ryota;Hirano Takuya
我们证明了具有时均光学势的超冷原子气体的引力补偿。利用声光偏转器对远场非共振光束的位置进行时间调制，以有效地产生与原子磁子能级无关的线性梯度势。实现了弱垂向约束圈闭中重力凹陷的补偿和简并气的制备。光学重力补偿将为在实验室进行微重力实验提供机会，并扩大冷原子研究的范围。
We demonstrate gravity compensation for an ultracold gas ofatoms with a time-averaged optical potential. The position of a far-off-resonance beam is temporally modulated with an acousto-optic deflector to efficiently produce a potential with a linear gradient independent of the atomic magnetic sublevels. We realize compensation of the gravity sag and preparation of a degenerate gas in a trap with weak vertical confinement. Optical gravity compensation will provide the opportunity to perform experiments under microgravity in a laboratory and broaden the scope of cold atom research.