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Phys. Rev. A 76, 042101 (2007) [4 pages]

Quantum decoherence modulated by special relativity

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Jian-Ming Cai1, Zheng-Wei Zhou1,*, Ye-Fei Yuan2, and Guang-Can Guo1
1Key Laboratory of Quantum Information, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
2Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China

Received 18 January 2007; published 1 October 2007

By investigating the evolution of a moving spin-1/2 Dirac electron coupled with a background magnetic noise, we demonstrate that the effects of special relativity will significantly modify the decoherence properties of the spin state. The dephasing could be much suppressed, and for a sufficiently long time the decoherence even seems to halt. This interesting phenomenon stems from the dressed environment induced by special relativity.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.042101
DOI:
10.1103/PhysRevA.76.042101
PACS:
03.65.Yz, 03.65.Ta, 03.30.+p, 03.67.−a

*zwzhou@ustc.edu.cn

 
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