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arXiv 0709.1210quant-ph
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厄米共轭测量

Hermitian conjugate measurement

Hiroaki Terashima, Masahito Ueda

摘要:

我们提出了一类新的概率反转操作的状态的系统,被干扰的弱测量。利用测量算符的厄米共轭,特别是在附加信息增益的情况下,它可以近似地从扰动态恢复原始态。我们说明了一般的计划,考虑一个量子测量组成的自旋系统与实验上可行的相互作用,并表明,反转操作同时增加了保真度的原始状态和信息增益与这样一个成功的概率很高,它们的平均值同时增加。

英文摘要:

We propose a new class of probabilistic reversing operations on the state of a system that was disturbed by a weak measurement. It can approximately recover the original state from the disturbed state especially with an additional information gain using the Hermitian conjugate of the measurement operator. We illustrate the general scheme by considering a quantum measurement consisting of spin systems with an experimentally feasible interaction and show that the reversing operation simultaneously increases both the fidelity to the original state and the information gain with such a high probability of success that their average values increase simultaneously.

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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