Nonlocality and Entanglement via the Unruh effect
Abstract
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.
Keywords
Cite
@article{arxiv.1301.5987,
title = {Nonlocality and Entanglement via the Unruh effect},
author = {Zehua Tian and Jieci Wang and Jiliang Jing},
journal= {arXiv preprint arXiv:1301.5987},
year = {2015}
}
Comments
19 pages, 7 figures, accepted for publication in Annals of Physics. arXiv admin note: text overlap with arXiv:1003.4477 by other authors