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理论物理通讯：英文版

Self-Trapping of Two Weakly Coupled Bose-Einstein Condensates with Oscillating Atomic Scattering Length

Xie Xie, Qiong-Tao

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

我们与原子散布长度的快速的周期的调整为二微弱地联合的鲍斯·爱因斯坦冷凝物调查自我拍的现象。由使用一个平均方法，慢动力学的运动的方程被导出分析自我套住的行为。在某些条件下面，在也自我套住的一种选择很好出现，这数字地被显示出。

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We demonstrate the operation of an atom interferometer based on a weakly interacting Bose-Einstein condensate. We strongly reduce the interaction induced decoherence that usually limits interferometers based on trapped condensates by tuning the s-wave scattering length almost to zero via a magnetic Feshbach resonance. We employ a 39K condensate trapped in an optical lattice, where Bloch oscillations are forced by gravity. The fine-tuning of the scattering length down to 0.1 a_(0) and the micrometric sizes of the atomic sample make our system a very promising candidate for measuring forces with high spatial resolution. Our technique can be in principle extended to other measurement schemes opening new possibilities in the field of trapped atom interferometry.