dorsal/arxiv
View SchemaEffect of Decoherence on Bell's Inequality for an EPR Pair
| Authors | A. Venugopalan, Deepak Kumar, R. Ghosh |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9501021 |
| URL | https://arxiv.org/abs/quant-ph/9501021 |
Abstract
According to Bell's theorem, the degree of correlation between spatially separated measurements on a quantum system is limited by certain inequalities if one assumes the condition of locality. Quantum mechanics predicts that this limit can be exceeded, making it nonlocal. We analyse the effect of an environment modelled by a fluctuating magnetic field on the quantum correlations in an EPR singlet as seen in the Bell inequality. We show that in an EPR setup, the system goes from the usual 'violation' of Bell inequality to a 'non-violation' for times larger than a characteristic time scale which is related to the parameters of the fluctuating field. We also look at these inequalities as a function of the spatial separation between the EPR pair.
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"abstract": "According to Bell\u0027s theorem, the degree of correlation between spatially\nseparated measurements on a quantum system is limited by certain inequalities\nif one assumes the condition of locality. Quantum mechanics predicts that this\nlimit can be exceeded, making it nonlocal. We analyse the effect of an\nenvironment modelled by a fluctuating magnetic field on the quantum\ncorrelations in an EPR singlet as seen in the Bell inequality. We show that in\nan EPR setup, the system goes from the usual \u0027violation\u0027 of Bell inequality to\na \u0027non-violation\u0027 for times larger than a characteristic time scale which is\nrelated to the parameters of the fluctuating field. We also look at these\ninequalities as a function of the spatial separation between the EPR pair.",
"arxiv_id": "quant-ph/9501021",
"authors": [
"A. Venugopalan",
"Deepak Kumar",
"R. Ghosh"
],
"categories": [
"quant-ph"
],
"title": "Effect of Decoherence on Bell\u0027s Inequality for an EPR Pair",
"url": "https://arxiv.org/abs/quant-ph/9501021"
},
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