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arXiv quant-ph/0107004quant-ph
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量子假设检验中Stein引理意义下的POVM最优序列

Optimal sequence of POVMs in the sense of Stein's lemma in quantum hypothesis testing

Masahito Hayashi

摘要:

本文通过计算信息谱给出了量子Stein引理的另一种证明,并研究了Stein引理意义下的一种渐近最优测量。我们提出了一个投影测度,它是由特殊线性群SL(H)的不可约表示理论刻画的。特别地,在自旋1/2系统中,它是通过同时测量总动量和指定方向的动量来实现的。

英文摘要:

In this paper, we give another proof of quantum Stein's lemma by calculating the information spectrum, and study an asymptotic optimal measurement in the sense of Stein's lemma. We propose a projection measurement characterized by the irreducible representation theory of the special linear group SL(H). Specially, in spin 1/2 system, it is realized by a simultaneous measurement of the total momentum and a momentum of a specified direction.

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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