Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics and Lasers in Engineering

A theoretical and experimental study of fluctuations of the optical parametric oscillator

A. Porzio, A. Chiummo, Fabio Sciarrino, S. Solimeno

Published May 1, 2002• 4 citations
Publisher
DOI
10.1016/s0143-8166(01)00116-6

Related papers

The quantum-fluctuations of the optical parametric oscillator. I

R. Graham, Hermann Haken

Zeitschrift für Physik A Hadrons and Nuclei•Jun 1, 1968•158 citations

The quantum-fluctuations of the optical parametric oscillator. II

R. Graham

Zeitschrift für Physik A Hadrons and Nuclei•Aug 1, 1968•79 citations

The possibility of enhancing light squeezing by cascade parametric oscillation

E G Lariontsev

Quantum fluctuations of the output radiation amplitude in a cascade of unidirectional ring optical parametric oscillators (OPOs) operating upon pumping below the threshold are studied theoretically. It is shown that, by using a cascade of OPOs, one can reduce the spectral density of the fluctuations due to more efficient light squeezing.

Quantum Electronics•Feb 28, 2001•0 citations

Entanglement in the above-threshold optical parametric oscillator

Alessandro S. Villar, K. N. Cassemiro, K. Dechoum +3 more

We investigate entanglement in the above-threshold optical parametric oscillator, both theoretically and experimentally, and discuss its potential applications to quantum information. The fluctuations measured in the subtraction of signal and idler amplitude quadratures are Δ2p̂−=0.50(1), or −3.01(9) dB, and in the sum of phase quadratures they are Δ2q̂+=0.73(1), or −1.37(6) dB. A detailed experimental study of the noise behavior as a function of pump power is presented, and the discrepancies with theory are discussed.

arXiv:quant-ph/0610208•Journal of the Optical Society of America B•Jan 26, 2007•44 citations

Squeezing, Bistability and Instability in the Optical Parametric Oscillator

E. Giacobino, Claude Fabre, A. Heidmann +2 more

Springer proceedings in physics•Jan 1, 1989•0 citations

Statistical properties of light from optical parametric oscillators

Reeta Vyas, Surendra Singh

Coherence properties of light beams generated by optical parametric oscillators (OPOs) are discussed in the region of threshold. Analytic expressions, that are valid throughout the threshold region, for experimentally measurable quantities such as the mean and variance of photon number fluctuations, squeezing of field quadratures, and photon counting distributions are derived. These expressions describe non-Gaussian fluctuations of light in the region of threshold and reproduce Gaussian fluctuations below and above threshold, thus providing a bridge between below and above threshold regimes of operation. They are used to study the transformation of fluctuation properties of light as the OPOs make a transition from below to above threshold. The results for the OPOs are compared to those for the single-mode and two-mode lasers and their similarities and differences are discussed.

Physical Review A•Dec 16, 2009•9 citations
We investigate entanglement in the above-threshold optical parametric oscillator, both theoretically and experimentally, and discuss its potential applications to quantum information. The fluctuations measured in the subtraction of signal and idler amplitude quadratures are Δ2p̂−=0.50(1), or −3.01(9) dB, and in the sum of phase quadratures they are Δ2q̂+=0.73(1), or −1.37(6) dB. A detailed experimental study of the noise behavior as a function of pump power is presented, and the discrepancies with theory are discussed.
Coherence properties of light beams generated by optical parametric oscillators (OPOs) are discussed in the region of threshold. Analytic expressions, that are valid throughout the threshold region, for experimentally measurable quantities such as the mean and variance of photon number fluctuations, squeezing of field quadratures, and photon counting distributions are derived. These expressions describe non-Gaussian fluctuations of light in the region of threshold and reproduce Gaussian fluctuations below and above threshold, thus providing a bridge between below and above threshold regimes of operation. They are used to study the transformation of fluctuation properties of light as the OPOs make a transition from below to above threshold. The results for the OPOs are compared to those for the single-mode and two-mode lasers and their similarities and differences are discussed.