Nonclassical correlations in non-Markovian continuous-variable systems
Nonclassical correlations in non-Markovian continuous-variable systems
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DOI：
10.1103/physreva.82.012313
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发表时间：
2010-05
影响因子：
2.9
通讯作者：
R. Vasile;P. Giorda;S. Olivares;M. Paris;S. Maniscalco
中科院分区：
文献类型：
--
作者：
R. Vasile;P. Giorda;S. Olivares;M. Paris;S. Maniscalco
我们考虑两个相同的和非相互作用的谐波振荡器，耦合到两个独立的骨浴或一个常见的骨浴。在唯一的假设下，弱耦合，我们详细分析了强度相关性，纠缠和量子不和谐的非马尔可夫人短期尺度演变，用于初始两种模式挤压 - 热真空状态。在独立的储层案例中，我们观察到所有这些数量的环境的有害效果，并为它们对环境噪声的稳健性建立了层次结构。在常见的储层情况下，对于初始不相关的状态，我们发现只能通过与浴室的相互作用产生量子不和谐，而纠缠和串扰噪声强度相关性仍然不存在。
We consider two identical and noninteracting harmonic oscillators coupled to either two independent bosonic baths or to a common bosonic bath. Under the only assumption, weak coupling, we analyze in detail the non-Markovian short-time-scale evolution of intensity correlations, entanglement, and quantum discord for initial two-mode squeezed-thermal vacuum states. In the independent reservoirs case, we observe the detrimental effect of the environment for all these quantities and we establish a hierarchy for their robustness against the environmental noise. In the common reservoir case, for initial uncorrelated states, we find that only quantum discord can be created via interaction with the bath, while entanglement and subshot noise intensity correlations remain absent.