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arXiv 1605.09481quant-ph
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单光子态光子丢失和退相干的有效保护协议

The effective protection protocol of single photon state from photon loss and decoherence

Lan Zhou, Yu-Bo Sheng

摘要:

我们设计了一个有效的协议来保护单光子纠缠不受光子丢失和退相干的影响。该协议只需要一些辅助单光子和线性光学元件。通过该方案的实施,可以有效地减少光子的损失,并以一定的概率将纠缠度较小的单光子态恢复到最大纠缠态。此外,编码在单光子态的偏振信息可以被完美地包含。该协议在现有的实验条件下可以实现。由于单光子纠缠在量子通信中的重要性,该协议在当前和未来的量子信息处理中具有重要的应用价值。

英文摘要:

We design an effect protocol for protecting the single-photon entanglement from photon loss and decoherence. The protocol only requires some auxiliary single photons and the linear optical elements. By operating the protocol, the photon loss can be effectively decreased and the less entangled single photon state can be recovered to the maximally entangled state with some probability. Moreover, the polarization information encoded in the single photon state can be perfectly contained. The protocol can be realized under current experimental condition. As the single photon entanglement is quite important in quantum communication, this protocol may be useful in current and future quantum information processing.

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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