dorsal/arxiv
View SchemaNon-maximally entangled states: production, characterization and utilization
| Authors | Andrew G. White, Daniel F. V. James, Philippe H. Eberhard, Paul G. Kwiat |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9908081 |
| URL | https://arxiv.org/abs/quant-ph/9908081 |
| DOI | 10.1103/PhysRevLett.83.3103 |
| Journal | Physical Review Letters 83, no. 16, pp. 3103-3107 (1999) |
Abstract
Using a spontaneous-downconversion photon source, we produce true non-maximally entangled states, i.e., without the need for post-selection. The degree and phase of entanglement are readily tunable, and are characterized both by a standard analysis using coincidence minima, and by quantum state tomography of the two-photon state. Using the latter, we experimentally reconstruct the reduced density matrix for the polarization. Finally, we use these states to measure the Hardy fraction, obtaining a result that is $122 \sigma$ from any local-realistic result.
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"abstract": "Using a spontaneous-downconversion photon source, we produce true\nnon-maximally entangled states, i.e., without the need for post-selection. The\ndegree and phase of entanglement are readily tunable, and are characterized\nboth by a standard analysis using coincidence minima, and by quantum state\ntomography of the two-photon state. Using the latter, we experimentally\nreconstruct the reduced density matrix for the polarization. Finally, we use\nthese states to measure the Hardy fraction, obtaining a result that is $122\n\\sigma$ from any local-realistic result.",
"arxiv_id": "quant-ph/9908081",
"authors": [
"Andrew G. White",
"Daniel F. V. James",
"Philippe H. Eberhard",
"Paul G. Kwiat"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.83.3103",
"journal_ref": "Physical Review Letters 83, no. 16, pp. 3103-3107 (1999)",
"title": "Non-maximally entangled states: production, characterization and utilization",
"url": "https://arxiv.org/abs/quant-ph/9908081"
},
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