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20 April 2024

» arxiv » quant-ph/0211169

Article overview

Optimal asymmetric cloning machine on a great circle using no-signalling condition
Samir Kunkri ; Md. Manirul Ali ; Geetu Narang ; Debasis Sarkar ;
Date:	26 Nov 2002
Subject:	quant-ph
Abstract:	Assuming the condition of no superluminal signalling, we got an upper bound on the quality of all asymmetric $ 1 o 2$ cloning machines, acting on qubits whose Bloch vectors lie on a great circle. Then we constructed an $ 1 o 2$ cloning machine, which asymmetrically clone all qubits corresponding to this great circle, and this machine matches with that upper bound, and hence this is optimal one.
Source:	arXiv, quant-ph/0211169
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