9802024v2

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Transitions in quantum networks

Paivi Torma

abstract: We consider transitions in quantum networks analogous to those in the two-dimensional Ising model. We show that for a network of active components the transition is between the quantum and the classical behaviour of the network, and the critical amplification coincides with the fundamental quantum cloning limit.

oai_identifier:
oai:arXiv.org:quant-ph/9802024
categories:
quant-ph
comments:
Revised version: Eq.(7) of the previous version changed, references added; 4 pages, 1 figure
doi:
10.1103/PhysRevLett.81.2185
arxiv_id:
quant-ph/9802024
journal_ref:
Phys.Rev.Lett. 81 (1998) 2185-2189
created:
1998-02-09
updated:
1998-02-26

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