论文标题
可调的非转录量子量子通过超电原子中的耗散性aharonov-bohm环
Tunable non-reciprocal quantum transport through a dissipative Aharonov-Bohm ring in ultracold atoms
论文作者
论文摘要
我们报告了在动量晶格中对玻色子冷凝物的可调，非核量子转运的实验观察。通过在动量空间中实现耗散的Aharonov-Bohm（AB）环并通过其发送原子，我们通过测量不同时间的冷凝物的动量分布来证明方向性原子流。虽然耗散ab环的特征是通过环的合成磁通量和激光诱导的损耗，但原子流的传播方向和传输速率都敏感地取决于这些高度可调的参数。我们证明了非循环性源自合成磁通量和激光诱导的损耗的相互作用，这同时破坏了反转和时间反转对称性。我们的结果开放了研究冷原子中非重生动力学的途径，并突出显示耗散ab环，作为用于量子模拟和量子信息中应用的灵活建筑元素。
We report the experimental observation of tunable, non-reciprocal quantum transport of a Bose-Einstein condensate in a momentum lattice. By implementing a dissipative Aharonov-Bohm (AB) ring in momentum space and sending atoms through it, we demonstrate a directional atom flow by measuring the momentum distribution of the condensate at different times. While the dissipative AB ring is characterized by the synthetic magnetic flux through the ring and the laser-induced loss on it, both the propagation direction and transport rate of the atom flow sensitively depend on these highly tunable parameters. We demonstrate that the non-reciprocity originates from the interplay of the synthetic magnetic flux and the laser-induced loss, which simultaneously breaks the inversion and the time-reversal symmetries. Our results open up the avenue for investigating non-reciprocal dynamics in cold atoms, and highlight the dissipative AB ring as a flexible building element for applications in quantum simulation and quantum information.
