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arXiv 1111.1971quant-ph
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利用哪路信息测量原子系综温度

Measurement of the temperature of atomic ensembles via which-way information

R. de J. León-Montiel, Juan P. Torres

摘要:

我们揭示了Λ-组态三能级原子系综的温度与原子受光束激发时自发发射的Stokes光子的发射锥宽度之间的关系。这种关系,这是基于在相互作用过程中的斯托克斯光子起源的可用信息的量,使我们能够提出一个方案,通过测量发射锥的宽度来确定原子云的温度。与通常使用的飞行时间测量不同,使用这种技术,原子云在每次测量过程中不会被破坏。

英文摘要:

We unveil the relationship existing between the temperature of an atomic ensemble of three-level atoms in a Λ-configuration, and the width of the emission cone of Stokes photons that are spontaneously emitted when atoms are excited by an optical beam. This relationship, which is based on the amount of which-way information available about where the Stokes photon originated during the interaction, allow us to put forward a scheme to determine the temperature of atomic clouds by measuring the width of the emission cone. Unlike the commonly used time-of-flight measurements, with this technique, the atomic cloud is not destroyed during each measurement.

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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