Optimal 1->M universal quantum cloning via spin networks
Quantum Physics
2009-11-13 v1
Abstract
We present a scheme that transform 1 qubit to M identical copies with optimal fidedelity via free dynamical evolution of spin star networks. We show that the Heisenberg XXZ coupling can fulfill the challenge. The initial state of the copying machine and the parameters of the spin Hamiltonian are discussed in detail. Furthermore we have proposed a feasible method to prepare the initial state of the copying machine.
Keywords
Cite
@article{arxiv.0705.2694,
title = {Optimal 1->M universal quantum cloning via spin networks},
author = {Zhang Jiang and Qing Chen and Shaolong Wan},
journal= {arXiv preprint arXiv:0705.2694},
year = {2009}
}