Single-atom-aided probe of the decoherence of a Bose-Einstein condensate
Single-atom-aided probe of the decoherence of a Bose-Einstein condensate
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DOI：
10.1103/physreva.78.023610
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发表时间：
2008-08-01
影响因子：
2.9
通讯作者：
Bose, S.
中科院分区：
文献类型：
--
作者：
Ng, H. T.;Bose, S.
我们研究了一个与玻色-爱因斯坦凝聚体耦合的二能级原子。我们发现，利用该系统可以探索涉及凝聚态的不同类经典态的介观叠加态的退相干规律。无论凝聚体最初是处于相干状态、热状态，还是更一般地处于任何相干态的混合物中，该方案都是适用的。因此，可以研究原子损耗和有限温度对退相干的影响。我们还讨论了引起退相干的各种噪声源。
We study a two-level atom coupled to a Bose-Einstein condensate. We show that the rules governing the decoherence of mesoscopic superpositions involving different classical-like states of the condensate can be probed using this system. This scheme is applicable irrespective of whether the condensate is initially in a coherent, thermal, or more generally, in any mixture of coherent states. The effects of atom loss and finite temperature to the decoherence can therefore be studied. We also discuss the various noise sources causing the decoherence.