dorsal/arxiv
View SchemaA new conception experimental test of Bell inequalities using non-maximally entangled states
| Authors | G. Brida, M. Genovese, C. Novero, E. Predazzi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0004033 |
| URL | https://arxiv.org/abs/quant-ph/0004033 |
Abstract
We report on a test of Bell inequalities using a non-maximally entangled state, which represents an important step in the direction of eliminating the detection loophole. The experiment is based on the creation of a polarisation entangled state via the superposition, by use of an appropriate optics, of the spontaneous fluorescence emitted by two non-linear crystals driven by the same pumping laser. The alignment has profitably taken advantage from the use of an optical amplifier scheme, where a solid state laser is injected into the crystals together with the pumping laser. In principle a very high total quantum efficiency can be reached using this configuration and thus the final version of this experiment can lead to a resolution of the detection loophole, we carefully discuss the conditions which must be satisfied for reaching this result.
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"date_created": "2026-03-02T18:01:39.264000Z",
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"abstract": "We report on a test of Bell inequalities using a non-maximally entangled\nstate, which represents an important step in the direction of eliminating the\ndetection loophole. The experiment is based on the creation of a polarisation\nentangled state via the superposition, by use of an appropriate optics, of the\nspontaneous fluorescence emitted by two non-linear crystals driven by the same\npumping laser. The alignment has profitably taken advantage from the use of an\noptical amplifier scheme, where a solid state laser is injected into the\ncrystals together with the pumping laser. In principle a very high total\nquantum efficiency can be reached using this configuration and thus the final\nversion of this experiment can lead to a resolution of the detection loophole,\nwe carefully discuss the conditions which must be satisfied for reaching this\nresult.",
"arxiv_id": "quant-ph/0004033",
"authors": [
"G. Brida",
"M. Genovese",
"C. Novero",
"E. Predazzi"
],
"categories": [
"quant-ph",
"hep-ex",
"physics.optics"
],
"title": "A new conception experimental test of Bell inequalities using non-maximally entangled states",
"url": "https://arxiv.org/abs/quant-ph/0004033"
},
"schema_id": "dorsal/arxiv",
"source": {
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"variant": "snapshot-2026-03-01",
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