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arXiv 0812.4631quant-ph
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环形腔中四原子系综纯连续变量纠缠团簇态的产生

Generation of pure continuous-variable entangled cluster states of four separate atomic ensembles in a ring cavity

Gao-xiang Li, Sha-sha Ke, Zbigniew Ficek

摘要:

提出了一种在高精细度环形腔中制备四个不同原子系综的连续变量纠缠团簇态的实用方案。该方案不需要一组外部输入压缩场、分束器网络和测量。它只基于原子系综和腔模之间的色散相互作用以及适当调整幅度和相位的激光脉冲的顺序应用。我们证明了在连续激光脉冲作用下,原子的场模被驱动到压缩真空态。然后根据属于聚类状态类的要求检查状态。我们举例说明的纠缠团簇态,所谓的连续变量的线性,方形和T型团簇态的三个例子的方法。

英文摘要:

A practical scheme is proposed for creation of continuous variable entangled cluster states of four distinct atomic ensembles located inside a high-finesse ring cavity. The scheme does not require a set of external input squeezed fields, a network of beam splitters and measurements. It is based on nothing else than the dispersive interaction between the atomic ensembles and the cavity mode and a sequential application of laser pulses of a suitably adjusted amplitudes and phases. We show that the sequential laser pulses drive the atomic "field modes" into pure squeezed vacuum states. The state is then examined against the requirement to belong to the class of cluster states. We illustrate the method on three examples of the entangled cluster states, the so-called continuous variable linear, square and T-type cluster states.

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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