dorsal/arxiv
View SchemaIntensity correlations and entanglement by frequency doubling in a dual ported resonator
| Authors | Oo-Kaw Lim, Mark Saffman |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0603079 |
| URL | https://arxiv.org/abs/quant-ph/0603079 |
| DOI | 10.1103/PhysRevA.74.023816 |
| Journal | Phys. Rev. A 74, 023816 (2006) |
Abstract
We show that non-classical intensity correlations and quadrature entanglement can be generated by frequency doubling in a resonator with two output ports. We predict twin-beam intensity correlations 6 dB below the coherent state limit, and that the product of the inference variances of the quadrature fluctuations gives an Einstein-Podolsky-Rosen (EPR) correlation coefficient of V_EPR = 0.6 < 1. Comparison with an entanglement source based on combining two frequency doublers with a beam splitter shows that the dual ported resonator provides stronger entanglement at lower levels of individual beam squeezing. Calculations are performed using a self-consistent propagation method that does not invoke a mean field approximation. Results are given for physically realistic parameters that account for the Gaussian shape of the intracavity beams, as well as intracavity losses.
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"abstract": "We show that non-classical intensity correlations and quadrature entanglement\ncan be generated by frequency doubling in a resonator with two output ports. We\npredict twin-beam intensity correlations 6 dB below the coherent state limit,\nand that the product of the inference variances of the quadrature fluctuations\ngives an Einstein-Podolsky-Rosen (EPR) correlation coefficient of V_EPR = 0.6 \u003c\n1. Comparison with an entanglement source based on combining two frequency\ndoublers with a beam splitter shows that the dual ported resonator provides\nstronger entanglement at lower levels of individual beam squeezing.\nCalculations are performed using a self-consistent propagation method that does\nnot invoke a mean field approximation. Results are given for physically\nrealistic parameters that account for the Gaussian shape of the intracavity\nbeams, as well as intracavity losses.",
"arxiv_id": "quant-ph/0603079",
"authors": [
"Oo-Kaw Lim",
"Mark Saffman"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.023816",
"journal_ref": "Phys. Rev. A 74, 023816 (2006)",
"title": "Intensity correlations and entanglement by frequency doubling in a dual ported resonator",
"url": "https://arxiv.org/abs/quant-ph/0603079"
},
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