dorsal/arxiv
View SchemaFamily of Zeilinger-Horne-Greenberger "W" states lead to stronger nonclassicality than family of Greenberger-Horne-Zeilinger "GHZ" states
| Authors | Aditi Sen De, Ujjwal Sen, Marcin Wiesniak, Dagomir Kaszlikowski, Marek Zukowski |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0211023 |
| URL | https://arxiv.org/abs/quant-ph/0211023 |
| DOI | 10.1103/PhysRevA.68.062306 |
| Journal | Phys. Rev. A, 68, 062306 (2003) |
Abstract
The N-qubit states of the W class, for N>10, lead to more robust (against noise admixture) violations of local realism, than the GHZ states. These violations are most pronounced for correlations for a pair of qubits, conditioned on specific measurement results for the remaining (N-2) qubits. The considerations provide us with a qualitative difference between the W state and GHZ state in the situation when they are separately sent via depolarizing channels. For sufficiently high amount of noise in the depolarizing channel, the GHZ states cannot produce a distillable state between two qubits, whereas the W states can still produce a distillable state in a similar situation.
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"abstract": "The N-qubit states of the W class, for N\u003e10, lead to more robust (against\nnoise admixture) violations of local realism, than the GHZ states. These\nviolations are most pronounced for correlations for a pair of qubits,\nconditioned on specific measurement results for the remaining (N-2) qubits. The\nconsiderations provide us with a qualitative difference between the W state and\nGHZ state in the situation when they are separately sent via depolarizing\nchannels. For sufficiently high amount of noise in the depolarizing channel,\nthe GHZ states cannot produce a distillable state between two qubits, whereas\nthe W states can still produce a distillable state in a similar situation.",
"arxiv_id": "quant-ph/0211023",
"authors": [
"Aditi Sen De",
"Ujjwal Sen",
"Marcin Wiesniak",
"Dagomir Kaszlikowski",
"Marek Zukowski"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.68.062306",
"journal_ref": "Phys. Rev. A, 68, 062306 (2003)",
"title": "Family of Zeilinger-Horne-Greenberger \"W\" states lead to stronger nonclassicality than family of Greenberger-Horne-Zeilinger \"GHZ\" states",
"url": "https://arxiv.org/abs/quant-ph/0211023"
},
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