Dependence of the decoherence of polarization states in phase-damping channels on the frequency spectrum envelope of photons
Dependence of the decoherence of polarization states in phase-damping channels on the frequency spectrum envelope of photons
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DOI：
10.1103/physreva.78.042103
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发表时间：
2008-07
影响因子：
2.9
通讯作者：
Y. Gong;Yong-Sheng Zhang;Yuli Dong;Xiao-Ling Niu;Yun-Feng Huang;G. Guo
中科院分区：
文献类型：
--
作者：
Y. Gong;Yong-Sheng Zhang;Yuli Dong;Xiao-Ling Niu;Yun-Feng Huang;G. Guo
研究了光子在相位阻尼通道中的退相干。通过研究单光子偏振态和双光子偏振纠缠态的演化，发现不同的光子频谱包络引起不同的退相干过程。白色频谱可以使退相干过程趋于理想的马尔可夫过程。某些颜色频谱可以引起渐近退相干，而另一些颜色频谱则可以使相干周期性地消失，并具有不同的恢复幅度。这些行为是由于退相干过程中的非马尔可夫效应引起的，它可能导致完全退相干后相干性的恢复。
We consider the decoherence of photons suffering in phase-damping channels. By exploring the evolutions of single-photon polarization states and two-photon polarization-entangled states, we find that different frequency spectrum envelopes of photons induce different decoherence processes. A white frequency spectrum can lead the decoherence to an ideal Markovian process. Some color frequency spectrums can induce asymptotical decoherence, while, some other color frequency spectrums can make coherence vanish periodically with variable revival amplitudes. These behaviors result from the non-Markovian effects on the decoherence process, which may give rise to a revival of coherence after complete decoherence.