Abstract

We demonstrate a low-threshold twin-beam generator using a cw triply resonant optical parametric oscillator consisting of two coupled cavities: one that resonates the signal and idler waves and the other the pump field. An intensity correlation of 5.5 dB was observed at 3 MHz for a type-II phase-matched KTP optical parametric oscillator.

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References

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  1. A. Heidmann, R. J. Horowicz, S. Reynaud, E. Giacobino, C. Fabre, and G. Camy, "Observation of quantum noise reduction on twin laser beams," Phys. Rev. Lett. 59, 2555-2557 (1987).
    [CrossRef] [PubMed]
  2. K. W. Leong, N. C. Wong, and J. H. Shapiro, "Nonclassical intensity correlation from a type I phase-matched optical parametric oscillator," Opt. Lett. 15, 1058-1060 (1990).
    [CrossRef] [PubMed]
  3. C. D. Nabors and R. M. Shelby, "Two-color squeezing and sub-shot-noise signal recovery in doubly resonant optical parametric oscillators," Phys. Rev. A 42, 556-559 (1990).
    [CrossRef] [PubMed]
  4. J. Mertz, T. Debuisschert, A. Heidmann, C. Fabre, and E. Giacobino, "Improvements in theobserved intensity correlation of optical parametric oscillator twin beams," Opt. Lett. 16, 1234-1236 (1991).
    [CrossRef] [PubMed]
  5. J. J. Snyder, E. Giacobino, C. Fabre, A. Heidmann, and M. Ducloy, "Sub-shot-noise measurements using the beat note between quantum-correlated photon beams," J. Opt. Soc. Am. B 7, 2132-2136 (1990).
    [CrossRef]
  6. N. C. Wong, K. W. Leong, and J. H. Shapiro, "Quantum correlation and absorption spectroscopy in an optical parametric oscillator in the presence of pump noise," Opt. Lett. 15, 891-893 (1990).
    [CrossRef] [PubMed]
  7. P. H. Souto Ribeiro, C. Schwob, A. Maitre, and C. Fabre, "Sub-shot-noise high-sensitivity spectroscopy with optical parametric oscillator twin beams," Opt. Lett. 22, 1893-1895 (1997).
    [CrossRef]
  8. N. C. Wong, "Squeezed amplification in a nondegenerate parametric amplifier," Opt. Lett. 16, 1698-1700 (1991).
    [CrossRef] [PubMed]

Other (8)

A. Heidmann, R. J. Horowicz, S. Reynaud, E. Giacobino, C. Fabre, and G. Camy, "Observation of quantum noise reduction on twin laser beams," Phys. Rev. Lett. 59, 2555-2557 (1987).
[CrossRef] [PubMed]

K. W. Leong, N. C. Wong, and J. H. Shapiro, "Nonclassical intensity correlation from a type I phase-matched optical parametric oscillator," Opt. Lett. 15, 1058-1060 (1990).
[CrossRef] [PubMed]

C. D. Nabors and R. M. Shelby, "Two-color squeezing and sub-shot-noise signal recovery in doubly resonant optical parametric oscillators," Phys. Rev. A 42, 556-559 (1990).
[CrossRef] [PubMed]

J. Mertz, T. Debuisschert, A. Heidmann, C. Fabre, and E. Giacobino, "Improvements in theobserved intensity correlation of optical parametric oscillator twin beams," Opt. Lett. 16, 1234-1236 (1991).
[CrossRef] [PubMed]

J. J. Snyder, E. Giacobino, C. Fabre, A. Heidmann, and M. Ducloy, "Sub-shot-noise measurements using the beat note between quantum-correlated photon beams," J. Opt. Soc. Am. B 7, 2132-2136 (1990).
[CrossRef]

N. C. Wong, K. W. Leong, and J. H. Shapiro, "Quantum correlation and absorption spectroscopy in an optical parametric oscillator in the presence of pump noise," Opt. Lett. 15, 891-893 (1990).
[CrossRef] [PubMed]

P. H. Souto Ribeiro, C. Schwob, A. Maitre, and C. Fabre, "Sub-shot-noise high-sensitivity spectroscopy with optical parametric oscillator twin beams," Opt. Lett. 22, 1893-1895 (1997).
[CrossRef]

N. C. Wong, "Squeezed amplification in a nondegenerate parametric amplifier," Opt. Lett. 16, 1698-1700 (1991).
[CrossRef] [PubMed]

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Figures (4)

Fig. 1.
Fig. 1.

Schematic of a dual-cavity TRO. Signal and idler fields are confined within the DRO cavity formed by mirrors M2 and M3.

Fig. 2.
Fig. 2.

Schematic of the experimental setup. HWP: half-wave plate, PBS: polarizing beam splitter.

Fig. 3.
Fig. 3.

Noise power spectrum of (a) mixed signal-idler mode (HWP1 angle at 22.5°), (b) pure signal-idler mode (HWP1 angle at 0°), and (c) photodetection electronics noise floor.

Fig. 4.
Fig. 4.

Noise power spectrum of output difference-intensity correlation for (a) mixed signal-idler mode (HWP1 angle at 22.5°) and (b) pure signal-idler mode (HWP1 angle at 0°). Maximum noise suppression is 5.5 dB at 3 MHz.

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