Generation of continuous variable Einstein-Podolsky-Rosen entanglement via the Kerr nonlinearity in an optical fiber

Date

2001

Authors

Silberhorn, Christine
Lam, Ping Koy
Weiss, Oliver
Konig, F
Korolkova, F
Leuchs, G

Journal Title

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Publisher

American Physical Society

Abstract

We report on the generation of a continuous variable Einstein-Podolsky-Rosen (EPR) entanglement using an optical fiber interferometer. The Kerr nonlinearity in the fiber is exploited for the generation of two independent squeezed beams. These interfere at a beam splitter and EPR entanglement is obtained between the output beams. The correlation of the amplitude (phase) quadratures is measured to be 4.0±0.2 (4.0±0.4)dB below the quantum noise limit. The sum criterion for these squeezing variances 0.80±0.03<2 verifies the nonseparability of the state. The product of the inferred uncertainties for one beam (0.64±0.08) is well below the EPR limit of unity.

Description

Keywords

Keywords: Interferometers; Laser beams; Optical beam splitters; Optical correlation; Optical Kerr effect; Einstein-Podolsky-Rosen (EPR) entanglements; Quantum theory

Citation

Physical Review Letters 86.19 (2001): 4267-4270

Source

Physical Review Letters

Type

Journal article

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DOI

10.1103/PhysRevLett.86.4267

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