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Catalytic Coherence Transformation and Distillation for Special Mixed States
Annalen Der Physik ( IF 2.2 ) Pub Date : 2020-04-08 , DOI: 10.1002/andp.201900473
Hai‐Bo Xing 1 , Ming Yang 1
Affiliation  

The coherence transformation and distillation for a class of special mixed coherent states of rank‐2 under incoherent operations (IO) is discussed. Similar to the entanglement transformation for mixed entangled states, the catalytic coherence transformation for this class of special mixed coherent states is analyzed. On the one hand, it is found that some of the mixed coherent states can be converted into other mixed coherent states under IO. But for those mixed coherent states which fail in the coherence conversion under IO, the catalytic coherence manipulation can solve this problem. In this case, a mixed coherent state cannot be converted into another under IO, while the coherence transformation can be realized with the help of coherence‐assisted incoherent operations, that is, catalytic coherence transformation. On the other hand, these special mixed coherent states can be distilled into the maximally pure coherent states or mixed states of arbitrary dimensions by strictly incoherent operations with certain probabilities. Finally, the coherence transformation of this type of mixed states can be generalized to the case of higher rank in a similar way, which is discussed at the end of this paper.

中文翻译:

特殊混合态的催化相干转化和蒸馏

讨论了非相干运算(IO)下一类秩为2的特殊混合相干态的相干变换和蒸馏。类似于混合纠缠态的纠缠变换,分析了这类特殊混合相干态的催化相干变换。一方面,发现在IO下某些混合相干态可以转换成其他混合相干态。但是对于那些在IO下无法进行相干转换的混合相干态,催化相干操纵可以解决这个问题。在这种情况下,混合相干态无法在IO下转换为另一个相干态,而相干变换可以借助相干辅助的非相干操作(即催化相干变换)来实现。另一方面,通过具有某些概率的严格非相干运算,可以将这些特殊的混合相干态提炼为最大纯相干态或任意维度的混合态。最后,可以用类似的方式将这种混合状态的相干变换推广到较高秩的情况,这将在本文末尾讨论。
更新日期:2020-04-08
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