Universal destabilization and slowing of spin transfer functions by a bath of spins

Details Universal destabilization and slowing of spin transfer functions by a bath of spins Universal destabilization and slowing of spin transfer functions by a bath of spins

2006-01-08

arxiv.org/abs/quant-ph/0601047v2

Physical Review A 73, 062321 (2006)

Physics

Quantum Physics

4 pages, 5 figures; added references

Scientific paper

10.1103/PhysRevA.73.062321

We investigate the effect of a spin bath on the spin transfer functions of a permanently coupled spin system. When each spin is coupled to a seperate environment, the effect on the transfer functions in the first excitation sector is amazingly simple: the group velocity is slowed down by a factor of two, and the fidelity is destabilized by a modulation of |cos Gt|, where G is the mean square coupling to the environment.

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