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arXiv quant-ph/0310139quant-ph
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双模系统中的纠缠与压缩:理论与实验

Entanglement and squeezing in a two-mode system: theory and experiment

Vincent Josse, Aurelien Dantan, Alberto Bramati, Elisabeth Giacobino

摘要:

本文报道了在光学谐振腔中,线偏振光束与冷铯原子云相互作用产生不可分离光束。我们将两个线性偏振模式的压缩转换为正交纠缠,并展示了如何使用连续变量的不可分离性准则来找出双模系统中产生的最佳纠缠[Duan et al.,物理修订信函84,2722(2000)]。我们验证了这种方法的实验与直接测量的不可分性,使用两个零差检测。然后将这种纠缠映射到一个偏振基上,实现了偏振纠缠。

英文摘要:

We report on the generation of non separable beams produced via the interaction of a linearly polarized beam with a cloud of cold cesium atoms placed in an optical cavity. We convert the squeezing of the two linear polarization modes into quadrature entanglement and show how to find out the best entanglement generated in a two-mode system using the inseparability criterion for continuous variable [Duan et al., Phys. Rev. Lett. 84, 2722 (2000)]. We verify this method experimentally with a direct measurement of the inseparability using two homodyne detections. We then map this entanglement into a polarization basis and achieve polarization entanglement.

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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