dorsal/arxiv
View SchemaA method for reaching detection efficiencies necessary for optical loophole-free Bell experiments
| Authors | Mladen Pavicic |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9907039 |
| URL | https://arxiv.org/abs/quant-ph/9907039 |
| DOI | 10.1016/S0030-4018(97)00285-X |
| Journal | Opt.Commun. 142 (1997) 308-314 |
Abstract
A method for preparing a loophole-free four-photon Bell experiments which requires a detection efficiency of 67% is proposed. It enables realistic detection efficiencies of 75% at a visibility of 85%. Two type-II crystals each down convert one correlated photon pair and we entangle one photon from one pair with one photon from the other pair on a highly transparent beam splitter. The entanglement selects two other conjugate photons into a Bell state. Wide solid angles for the conjugate photons then enable us to collect close to 100% of them. The cases when both photon pairs come from only one of the two crystals are successfully taken into account. Hardy's equalities are discussed.
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"abstract": "A method for preparing a loophole-free four-photon Bell experiments which\nrequires a detection efficiency of 67% is proposed. It enables realistic\ndetection efficiencies of 75% at a visibility of 85%. Two type-II crystals each\ndown convert one correlated photon pair and we entangle one photon from one\npair with one photon from the other pair on a highly transparent beam splitter.\nThe entanglement selects two other conjugate photons into a Bell state. Wide\nsolid angles for the conjugate photons then enable us to collect close to 100%\nof them. The cases when both photon pairs come from only one of the two\ncrystals are successfully taken into account. Hardy\u0027s equalities are discussed.",
"arxiv_id": "quant-ph/9907039",
"authors": [
"Mladen Pavicic"
],
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"doi": "10.1016/S0030-4018(97)00285-X",
"journal_ref": "Opt.Commun. 142 (1997) 308-314",
"title": "A method for reaching detection efficiencies necessary for optical loophole-free Bell experiments",
"url": "https://arxiv.org/abs/quant-ph/9907039"
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