Optimal quantum cloning via spin networks
Quantum Physics
2007-05-23 v1
Abstract
In this paper we present an approach to quantum cloning via free dynamical evolution of spin networks. By properly designing the network and the couplings between spins, we show that optimal 1->M phase covariant cloning can be achieved without any external control. Especially, when M is an odd number, the optimal phase-covariant cloning can be achieved without ancillas. Moreover, we demonstrate that the same framework is capable for optimal 1->2 universal cloning.
Keywords
Cite
@article{arxiv.quant-ph/0510147,
title = {Optimal quantum cloning via spin networks},
author = {Qing Chen and Jianhua Cheng and Ke-Lin Wang and Jiangfeng Du},
journal= {arXiv preprint arXiv:quant-ph/0510147},
year = {2007}
}
Comments
4 pages, 1 figure