相位起伏玻色-爱因斯坦凝聚体的物质波干涉
Matter-wave Interferometry with Phase Fluctuating Bose-Einstein Condensates
摘要：
伸长的玻色-爱因斯坦凝聚体（BEC）即使在低于BEC转变温度时也表现出强烈的空间相位起伏。我们表明，原子干涉仪使用这样的冷凝物是强大的相位波动，即分裂冷凝物的相对相位是可重复的，尽管轴向相位波动。然而，较大的相位波动限制了相干时间，特别是在干涉仪的两个阱中存在一些不对称的情况下。
英文摘要：
Elongated Bose-Einstein condensates (BECs) exhibit strong spatial phase fluctuations even well below the BEC transition temperature. We demonstrate that atom interferometers using such condensates are robust against phase fluctuations, i.e. the relative phase of the split condensate is reproducible despite axial phase fluctuations. However, larger phase fluctuations limit the coherence time, especially in the presence of some asymmetries in the two wells of the interferometer.
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