On skew information
On skew information
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DOI：
10.1109/tit.2004.831853
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发表时间：
2004-08
影响因子：
2.5
通讯作者：
S. Luo;Qiang Zhang
中科院分区：
文献类型：
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作者：
S. Luo;Qiang Zhang
在本文中，我们证明了Wigner和Yanase引入的偏态信息是纯态方差的自然信息扩展，可以被解释为量子不确定性的度量。利用歪斜信息，我们以薛定谔的精神建立了一种新的不确定性关系，它将观测值之间的不相容（编码在换向子中）和相关（编码在与歪斜信息相关的新相关测度中）结合起来，并且比传统的不确定性关系更强。
In this paper, we show that skew information introduced by Wigner and Yanase, which is a natural informational extension of variance for pure states, can be interpreted as a measure of quantum uncertainty. By virtue of skew information, we establish a new uncertainty relation in the spirit of Schrodinger, which incorporates both incompatibility (encoded in the commutator) and correlations (encoded in a new correlation measure related to skew information) between observables, and moreover is stronger than the conventional ones.