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arXiv 1207.3203physics.atom-phquant-ph
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囚禁相干原子系综的反馈控制

Feedback control of trapped coherent atomic ensembles

T. Vanderbruggen, R. Kohlhaas, A. Bertoldi, S. Bernon, A. Aspect, A. Landragin, P. Bouyer

摘要:

我们演示了如何使用反馈来控制被囚禁的相干二能级原子系综的内部态,并保护叠加态免受集体噪声引起的退相干。我们的反馈方案是基于弱光学测量与可忽略的反作用和相干微波操纵。的反馈系统的效率进行了研究,为一个简单的二进制噪声模型,其特征在于从光学探头的信息检索和破坏性之间的权衡。我们还证明了更一般类型的集体噪声的校正。这种技术可用于操作原子干涉仪超出标准拉姆齐计划,开辟了通往改进的原子传感器的道路。

英文摘要:

We demonstrate how to use feedback to control the internal states of trapped coherent ensembles of two-level atoms, and to protect a superposition state against the decoherence induced by a collective noise. Our feedback scheme is based on weak optical measurements with negligible back-action and coherent microwave manipulations. The efficiency of the feedback system is studied for a simple binary noise model and characterized in terms of the trade-off between information retrieval and destructivity from the optical probe. We also demonstrate the correction of more general types of collective noise. This technique can be used for the operation of atomic interferometers beyond the standard Ramsey scheme, opening the way towards improved atomic sensors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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