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Annals of Physics 351, 739 (2014)

ISSN: 0003-4916, SCI

Universal scheme for finite-probability perfect transfer of arbitrary multispin states through spin chains

Zhong-Xiao Man, Nguyen Ba An, Yun-Jie Xia, Jaewan Kim

In combination with the theories of open system and quantum recovering measurement, we propose a quantum state transfer scheme using spin chains by performing two sequential operations: a projective measurement on the spins of ‘environment’ followed by suitably designed quantum recovering measurements on the spins of interest. The scheme allows perfect transfer of arbitrary multispin states through multiple parallel spin chains with finite probability. Our scheme is universal in the sense that it is stateindependent and applicable to any model possessing spin–spin interactions. We also present possible methods to implement the

DOI: //dx.doi.org/10.1016/j.aop.2014.10.001