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arXiv quant-ph/0509204quant-ph
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水库诱导的有限时间解纠缠的直接测量

Direct measurement of finite-time disentanglement induced by a reservoir

M. Franca Santos, P. Milman, L. Davidovich, N. Zagury

摘要:

提出了一种直接研究两量子比特初始纠缠态在库作用下解纠缠动力学的方法。我们表明,它是可能的检测解纠缠,实验上可实现的例子衰减系统,通过测量一个单一的可观察的,这是不变的整个衰减。所考虑的系统可能导致有限时间或渐近解纠缠。提出了一种测量这种可观测的一般处方,它产生了操作意义的纠缠措施,并举例说明腔量子电动力学和被困离子。

英文摘要:

We propose a method for directly probing the dynamics of disentanglement of an initial two-qubit entangled state, under the action of a reservoir. We show that it is possible to detect disentanglement, for experimentally realizable examples of decaying systems, through the measurement of a single observable, which is invariant throughout the decay. The systems under consideration may lead to either finite-time or asymptotic disentanglement. A general prescription for measuring this observable, which yields an operational meaning to entanglement measures, is proposed, and exemplified for cavity quantum electrodynamics and trapped ions.

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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