dorsal/arxiv
View SchemaQuantum entanglement can be simulated without communication
| Authors | N. J. Cerf, N. Gisin, S. Massar, S. Popescu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0410027 |
| URL | https://arxiv.org/abs/quant-ph/0410027 |
| DOI | 10.1103/PhysRevLett.94.220403 |
| Journal | Phys. Rev. Lett. 94, 220403 (2005) |
Abstract
It has recently been shown that all causal correlations between two parties which output each one bit, a and b, when receiving each one bit, x and y, can be expressed as convex combinations of local correlations (i.e., correlations that can be simulated with local random variables) and non-local correlations of the form a+b=xy mod 2. We show that a single instance of the latter elementary non-local correlation suffices to simulate exactly all possible projective measurements that can be performed on the singlet state of two qubits, with no communication needed at all. This elementary non-local correlation thus defines some unit of non-locality, which we call a nl-bit.
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"abstract": "It has recently been shown that all causal correlations between two parties\nwhich output each one bit, a and b, when receiving each one bit, x and y, can\nbe expressed as convex combinations of local correlations (i.e., correlations\nthat can be simulated with local random variables) and non-local correlations\nof the form a+b=xy mod 2. We show that a single instance of the latter\nelementary non-local correlation suffices to simulate exactly all possible\nprojective measurements that can be performed on the singlet state of two\nqubits, with no communication needed at all. This elementary non-local\ncorrelation thus defines some unit of non-locality, which we call a nl-bit.",
"arxiv_id": "quant-ph/0410027",
"authors": [
"N. J. Cerf",
"N. Gisin",
"S. Massar",
"S. Popescu"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.94.220403",
"journal_ref": "Phys. Rev. Lett. 94, 220403 (2005)",
"title": "Quantum entanglement can be simulated without communication",
"url": "https://arxiv.org/abs/quant-ph/0410027"
},
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