Robustness of multiparty nonlocality to local decoherence
Quantum Physics
2013-05-29 v1
Abstract
We investigate the robustness of multiparty nonlocality under local decoherence, acting independently and equally on each subsystems. To be specific, we consider an N-qubit GHZ state under depolarization, dephasing, or dissipation channel, and tested the nonlocality by violation of Mermin-Klyshko inequality, which is one of Bell's inequalities for multi-qubit systems. The results show that the robustness of nonlocality increases with the number of qubits, and that the nonlocality of an N-qubit GHZ state with even N is extremely persistent against dephasing.
Keywords
Cite
@article{arxiv.quant-ph/0608236,
title = {Robustness of multiparty nonlocality to local decoherence},
author = {Sung Soon Jang and Yong Wook Cheong and Jaewan Kim and Hai-Woong Lee},
journal= {arXiv preprint arXiv:quant-ph/0608236},
year = {2013}
}
Comments
5 pages, 4 figures