2013/01/25 by Zehua Tian, Jieci Wang, Jiliang Jing
Physics and Astronomy · #gr-qc #hep-th #quant-ph
paper · pdf · doi:10.1016/j.aop.2013.01.015
published as Annals of Physics 332 (2013) 98 · 19 pages, 7 figures, accepted for publication in Annals of Physics. arXiv admin note: text overlap with arXiv:1003.4477 by other authors
arxiv created 2013/01/25 · arxiv updated 2015/06/12
Modeling the qubit by a two-level semiclassical detector coupled to a massless scalar field, we investigate how the Unruh effect affects the nonlocality and entanglement of two-qubit and three-qubit states when one of the entangled qubits is accelerated. Two distinct differences with the results of free field model in non-inertial frames are (i) for the two-qubit state, the CHSH inequality can not be violated for sufficiently large but finite acceleration, furthermore, the concurrence will experience "sudden death"; and (ii) for the three-qubit state, not only the entanglement vanishes in the infinite acceleration limit, but also the Svetlichny inequality can not be violated in the case of large acceleration.