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Weak measurement induced asymmetric quantum cloning
Laser Physics Letters ( IF 1.7 ) Pub Date : 2020-07-07 , DOI: 10.1088/1612-202x/ab9901
Bao-Long Fang 1, 2 , Jiaojiao Chen 3 , Feng Chen 1 , Liu Ye 4
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Asymmetric quantum cloning (QC) is important for eavesdropping due to non-cloning quantum theorem. In this paper we propose a method to produce an asymmetric QC using weak measurement. Compared with previous proposals (1999 Phys. Rev. A 60 2764, 2004 Phy.s Rev. A 69 062316), the fidelity of one copy can be improved, while the other one reduces more smoothly. Also, the average fidelity of two copies can be raised.



中文翻译:

弱测量导致不对称量子克隆

由于非克隆量子定理,非对称量子克隆(QC)对于窃听非常重要。在本文中,我们提出了一种使用弱测量来产生不对称QC的方法。与先前提出的建议(1999年相比物理评论60 2764,2004年Phy.s启69 062316)的一个副本的保真度得以提高,而另外一个更顺畅减少。同样,可以提高两个副本的平均保真度。

更新日期:2020-07-07
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