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arXiv 2001.10851quant-ph
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来自不相容退相干通道的内选择

Einselection from incompatible decoherence channels

Alexandre Feller, Guillaume Coeuret Cauquil, Benjamin Roussel

摘要:

量子系统与未受监控的环境的纠缠的退相干是迄今为止对量子世界出现经典图像的最令人信服的解释。虽然这是一个单一的Lindblad运营商很好地理解,在一个复杂系统环境相互作用的einselection过程中的作用仍有待澄清。在本文中,我们分析了一个开放的量子动力学启发的CQED实验与两个非对易Lindblad运营商建模退相干的数量基础和耗散退相干的相干态基础。我们使用量子轨道和相空间技术来研究和解决这个问题。数值研究了在给定能量下寻找使某些纠缠见证的变化最小的态的选择优化问题。我们发现,Fock状态仍然是最强大的状态,退相干到一个临界耦合。

英文摘要:

Decoherence of quantum systems from entanglement with an unmonitored environment is to date the most compelling explanation of the emergence of a classical picture from a quantum world. While it is well understood for a single Lindblad operator, the role in the einselection process of a complex system-environment interaction remains to be clarified. In this paper, we analyze an open quantum dynamics inspired by CQED experiments with two non-commuting Lindblad operators modeling decoherence in the number basis and dissipative decoherence in the coherent state basis. We study and solve exactly the problem using quantum trajectories and phase-space techniques. The einselection optimization problem, which we consider to be about finding states minimizing the variation of some entanglement witness at a given energy, is studied numerically. We show that Fock states remain the most robust states to decoherence up to a critical coupling.

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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