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  Observation of Entanglement between Two Light Beams Spanning an Octave in Optical Frequency

Grosse, N. B., Assad, S., Mehmet, M., Schnabel, R., Symul, T., & Ping, K. L. (2008). Observation of Entanglement between Two Light Beams Spanning an Octave in Optical Frequency. Physical Review Letters, 100(24): 243601. doi:10.1103/PhysRevLett.100.243601.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-633B-4 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-633C-2
Genre: Journal Article

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prl100-243601.pdf (Publisher version), 903KB
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 Creators:
Grosse, Nicolai B.1, Author
Assad, Syed1, Author
Mehmet, Moritz2, Author
Schnabel, Roman2, Author
Symul, Thomas1, Author
Ping, Koy Lam1, Author
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1External Organizations, , , ou_persistent22              
2Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_24010              

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 Abstract: We have experimentally demonstrated how two beams of light separated by an octave in frequency can become entangled after their interaction in a chi(2) nonlinear medium. The entangler was a nonlinear optical resonator that was strongly driven by coherent light at the fundamental and second-harmonic wavelengths. An interconversion between the fields created quantum correlations in the amplitude and phase quadratures, which were measured by two independent homodyne detectors. Analysis of the resulting correlation matrix revealed a wave function inseparability of 0.74(1)<1, thereby satisfying the criterion of entanglement.

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 Dates: 2008-06
 Publication Status: Issued
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 Identifiers: DOI: 10.1103/PhysRevLett.100.243601
eDoc: 373736
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Title: Physical Review Letters
Source Genre: Journal
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Pages: - Volume / Issue: 100 (24) Sequence Number: 243601 Start / End Page: - Identifier: ISSN: 1079-7114