dorsal/arxiv
View SchemaRobustness of multiparty nonlocality to local decoherence
| Authors | Sung Soon Jang, Yong Wook Cheong, Jaewan Kim, Hai-Woong Lee |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0608236 |
| URL | https://arxiv.org/abs/quant-ph/0608236 |
| DOI | 10.1103/PhysRevA.74.062112 |
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.
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"abstract": "We investigate the robustness of multiparty nonlocality under local\ndecoherence, acting independently and equally on each subsystems. To be\nspecific, we consider an N-qubit GHZ state under depolarization, dephasing, or\ndissipation channel, and tested the nonlocality by violation of Mermin-Klyshko\ninequality, which is one of Bell\u0027s inequalities for multi-qubit systems. The\nresults show that the robustness of nonlocality increases with the number of\nqubits, and that the nonlocality of an N-qubit GHZ state with even N is\nextremely persistent against dephasing.",
"arxiv_id": "quant-ph/0608236",
"authors": [
"Sung Soon Jang",
"Yong Wook Cheong",
"Jaewan Kim",
"Hai-Woong Lee"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.062112",
"title": "Robustness of multiparty nonlocality to local decoherence",
"url": "https://arxiv.org/abs/quant-ph/0608236"
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