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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 9,
  • Issue 3,
  • pp. 032701-
  • (2011)

Experimental generation of frequency-tunable entangled optical beams with continuous variables

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Abstract

Frequency tunable continuous variable (CV) entangled optical beams are experimentally demonstrated from a non-degenerate optical parametric oscillator working above the threshold. The measured correlation variances of amplitude and phase quadratures are 3.2 and 1.5 dB, respectively, below the corresponding shot noise level (SNL) in the tuning range of 580 GHz (2.25 nm). The frequency tuning is realized by simply controlling the temperature of the nonlinear crystal.

© 2011 Chinese Optics Letters

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