Designing a Spin Channel for Perfect Quantum Communication

Details Designing a Spin Channel for Perfect Quantum Communication Designing a Spin Channel for Perfect Quantum Communication

2007-08-27

arxiv.org/abs/0708.3482v1

Physics

Quantum Physics

Comments are welcome (xxq@xiyou.edu.cn)

Scientific paper

We propose a scheme for using a spin chain with fixed symmetry interaction as a channel for perfect quantum communication. The perfect quantum communication is determined by the eigenvalues that form a special arithmetical progression, the concrete interaction parameter $J_i$ is obtained as a function of integer and perfect transmission time $t_p$. There are infinite choices of $J_i$ for perfect transmission and one can design the channel according to the requirement of $t_p$. This scheme will provide more choices of spin chain for future experiment in quantum communication.

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