Decoherence from an antiferromagnetic environmentXiao-Zhong Yuan and Ka-Di Zhu
Department of Physics, Shanghai Jiao Tong University Shanghai 200240, PRC
received 22 October 2004; accepted in final form 25 January 2005
published online 23 February 2005
The decoherence of a central spin in an antiferromagnetic environment is investigated theoretically in terms of the spin wave approximation. It is analytically shown that the decoherence factor which displays a Gaussian decay strongly depends on the quantum correlations and the structure of the environment. The relation between the decoherence factor and the environmental temperature is also given explicitly.
03.65.Yz - Decoherence; open systems; quantum statistical methods.
03.67.-a - Quantum information.
75.30.Ds - Spin waves.
© EDP Sciences 2005