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arXiv quant-ph/0408054quant-phphysics.optics
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经典场辅助下双光子微脉塞相干性的原子-场转移

Atom-field transfer of coherence in a two-photon micromaser assisted by a classical field

A. F. Gomes, A. Vidiella-Barranco

摘要:

本文研究了双光子微脉塞系统中原子到腔场的相干性转移。由于场与穿过腔的原子的相互作用,场逐渐从最大熵状态(热状态)向几乎纯的状态(熵接近于零)变化。我们跟踪原子变量,即,原子态在离开腔体后不会被检测器破坏。我们发现,通过施加一个外部的经典驱动场,它是可能的,而不需要事先准备的原子在其能量本征态的叠加,以大大提高场的纯度。我们还讨论了一些非经典功能的结果字段。

英文摘要:

We investigate the transfer of coherence from atoms to a cavity field initially in a statistical mixture in a two-photon micromaser arrangement. The field is progressively modified from a maximum entropy state (thermal state) towards an almost pure state (entropy close to zero) due to its interaction with atoms sent across the cavity. We trace over the atomic variables, i.e., the atomic states are not collapsed by a detector after they leave the cavity. We find that by applying an external classical driving field it is possible to substantially increase the field purity without the need of previously preparing the atoms in a superposition of their energy eigenstates. We also discuss some of the nonclassical features of the resulting field.

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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