Quantifying the coherence of pure quantum states
Quantifying the coherence of pure quantum states
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量化纯量子态的相干性
DOI:
10.1103/physreva.94.042313
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发表时间:
2016-01
影响因子:
2.9
通讯作者:
Sarah Plosker
中科院分区:
文献类型:
--
作者:
Jianxin Chen;Shane Grogan;Nathaniel Johnston;Chi-Kwong Li;Sarah Plosker
In recent years, several measures have been proposed for characterizing the coherence of a given quantum state. We derive several results that illuminate how these measures behave when restricted to pure states. Notably, we present an explicit characterization of the closest incoherent state to a given pure state under the trace distance measure of coherence. We then use this result to show that the states maximizing the trace distance of coherence are exactly the maximally coherent states. We define the trace distance of entanglement and show that it coincides with the trace distance of coherence for pure states. Finally, we give an alternate proof to a recent result that the $\ell_1$ measure of coherence of a pure state is never smaller than its relative entropy of coherence.
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DOI:
10.1007/978-3-0348-9144-8_4
发表时间:
1989
期刊:
--
影响因子:
--
作者:
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通讯作者:
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1974
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作者:
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影响因子:
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作者:
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通讯作者:
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