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Probabilistic cloning and signalling

Sibasish Ghosh·Guruprasad Kar·Samir Kunkri·Anirban Roy
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Abstract

We give a proof of impossibility of probabilistic exact $1\to 2$ cloning of any three different states of a qubit. The simplicity of the proof is due to the use of a surprising result of remote state preparation [M.-Yong Ye, Y.-Sheng Zhang and G.-Can Guo, quant-ph/0307027 (2003)]. The result is extented to higher dimentional cases for special ensemble of states.

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Sibasish Ghosh, Guruprasad Kar, Samir Kunkri, Anirban Roy. 2003-12-23. Probabilistic cloning and signalling. https://arxiv.org/abs/quant-ph/0312045

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