Optimal quantum cloning via spin networks
量子物理
2007-05-23 v1
摘要
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.
引用
@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}
}
备注
4 pages, 1 figure