退相干谐振子中非经典性测度的动力学
量子物理
2012-10-29 v2
摘要
我们表明,与线性马尔可夫浴耦合的谐振子本征态在非经典性测度的动力学中表现出非平凡行为。具体来说,当系统经历退相干时,作为的函数,非经典性出现一个随时间变化的峰值。我们通过研究文献中先前提出的几种非经典性测度的动力学发现了这一效应,这些测度将量子态与所有经典态的集合进行比较。在研究这些测度时,我们引入了一组新的经典态用于计算,从而改进了使用这些测度可获得的结果。此外,遵循Kenfack和Życzkowski的思路,我们表明Wigner函数的负体积与所有非经典性测度吻合良好,同时在计算上显著更易处理。最后,我们探索了其他几个态的非经典性动力学。
引用
@article{arxiv.1206.3356,
title = {Dynamics of Non-classicality Measures in the Decohering Harmonic Oscillator},
author = {Peter A. Rose and Andrew C. McClung and Tyler E. Keating and Adam T. C. Steege and Eric S. Egge and Arjendu K. Pattanayak},
journal= {arXiv preprint arXiv:1206.3356},
year = {2012}
}
备注
20 pages, 5 figures. This paper has been trimmed and revised in response to referee comments since its initial submission in June 2012. It is a significantly expanded version of the manuscript Decoherence of Fock States Leads to a Maximally Quantum State (arXiv:1007.4618v1 [quant-ph]), submitted 27 Jul 2010