论文标题
具有有限带宽的光学介质中高斯州的嘈杂传播
Noisy propagation of Gaussian states in optical media with finite bandwidth
论文作者
论文摘要
我们以非平凡的光谱密度为特征的光学介质中处理高斯州的传播和纠缠。特别是，我们考虑具有有限带宽的环境，并表明在低温方向上：i）可能会忽略主方程中的世俗项； ii）衰减（阻尼）被强烈抑制； iii）总体扩散过程可以描述为仅取决于带宽的高斯噪声通道。我们发现，传播并不多的有害和纠缠可能受到保护形式的逆转性，我们发现了几个制度。
We address propagation and entanglement of Gaussian states in optical media characterised by non-trivial spectral densities. In particular, we consider environments with a finite bandwidth and show that in the low temperature regime: i) secular terms in the master equation may be neglected; ii) attenuation (damping) is strongly suppressed; iii) the overall diffusion process may be described as a Gaussian noise channel with variance depending only on the bandwidth. We find several regimes where propagation is not much detrimental and entanglement may be protected form decoherence.
