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Quantum Physics

Title: No Signalling and Probabilistic Quantum Cloning

Authors: Lucien Hardy, David D. Song
(Submitted on 7 May 1999)
Abstract: We show that the condition of no faster-than-light signalling restricts the number of quantum states that can be cloned in a given Hilbert space. This condition leads to the constraints on a probabilistic quantum cloning machine (PQCM) recently found by Duan and Guo.
Comments: 5 pages
Subjects: Quantum Physics (quant-ph)
Journal reference: Phys.Lett. A259 (1999) 331-333
DOI: 10.1016/S0375-9601(99)00448-X
Cite as: arXiv:quant-ph/9905024
  (or arXiv:quant-ph/9905024v1 for this version)

Submission history

From: Lucien Hardy [view email]
[v1] Fri, 7 May 1999 14:35:11 GMT (4kb)
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