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Paper detail

Part probabilistic cloning of linearly dependent states

From Ref. [Phys. Rev. Lett. 80(1998)4999] one knows that the quantum states secretly chosen from a certain set can be probabilistically cloned with positive cloning efficiencies if and only if all the states in the set are linearly independent. In this paper, we focus on the probabilistic quantum cloning (PQC) of linearly dependent states with nonnegative cloning efficiencies. We show that a linearly independent subset of the linearly dependent quantum states can be probabilistically cloned if and only if any one state in the subset can not be expressed as the linear superposition of the other states in the set. The optimal possible cloning efficiencies are also investigated.

preprint2016arXivOpen access
Pinshu RuiWen ZhangYanlin LiaoZiyun Zhang
quant-ph
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Pinshu RuiWen ZhangYanlin LiaoZiyun Zhang

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