Zhao-Ming Wang, Rui-Song Ma, C. Allen Bishop, Yong-Jian Gu
We investigate the quality of quantum state transfer through a uniformly
coupled antiferromagnetic spin chain. The fidelity of state transfer using
antiferromagnetic channels is found to compare well with communication
protocols based on ferromagnetic mediums. Our numerical results support the
conjecture that the fidelity of state transfer through antiferromagnetic
channels described by single-term states only depends on the number of initial
excitations present in the chain and is independent of the excitation ordering.
View original:
http://arxiv.org/abs/1201.3576
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