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

Physical Review A

Tunable sub-Poissonian light generation from a parametric amplifier using an intensity feedforward scheme

Chonghoon Kim, Prem Kumar

Published Apr 1, 1992• 8 citations
Publisher

Abstract

We analyze an intensity feedforward scheme to produce a sub-Poissonian (amplitude-squeezed) light beam from the intensity-correlated twin beams generated by a nondegenerate parametric amplifier. Photon-number measurement of the idler beam at the output of the parametric amplifier is linearly fed forward onto the output signal beam using an amplitude modulator. The minimum available Fano factor is shown to be 1/(2g-1), where g is the parametric amplifier gain, and is equal to the nonclassical intensity-noise-reduction factor of the twin beams at the output of the parametric amplifier. By changing the frequency of the input-signal beam, tunable sub-Poissonian light can be generated with this scheme for application in precision absorption spectroscopy.

DOI
10.1103/physreva.45.5237

Related papers

Tunable squeezed-light generation from twin beams using an optical-phase feed-forward scheme

Chonghoon Kim, Prem Kumar

We analyze an optical-phase feed-forward scheme to produce a squeezed-light beam from intensity-correlated twin beams generated by nondegenerate parametric amplification. The quadrature measurement of the idler beam at the output of the parametric amplifier is linearly fed forward onto the output signal beam with an electro-optic phase modulator. The minimum available squeezing factor is shown to be 1/(2g - 1), where g is the parametric amplifier gain, and is equal to the nonclassical intensity-noise reduction factor of the original twin beams at the output of the parametric amplifier. By changing the frequency of the input signal beam, one can generate tunable squeezed light with this scheme for application in precision spectroscopy.

Optics Letters•May 15, 1991•9 citations

Tunable squeezed-light generation from twin beams using an optical-phase feed-forward scheme: a broadband calculation

Chonghoon Kim, Prem Kumar

Recently we analyzed an optical-phase feed-forward scheme to produce a squeezed-light beam from the twin beams generated by nondegenerate optical parametric amplification.1 Our interest in this scheme stems from the possibility it allows for the generation of tunable squeezed light. If the input signal beam to the parametric amplifier is tunable, a tunable squeezed output beam can be obtained for spectroscopic applications.2 In this paper we present a wideband model of this scheme. Noise characteristics of the homodyne detector, that measures squeezing properties of the phase-controlled output signal beam from the parametric amplifier, are analyzed in detail. To minimize the squeezed-noise power at an arbitrarily given sideband frequency, the optimal phase feed-forward transfer function is calculated. This feed-forward transfer function is achievable with a bandpass filter and an electronic amplifier. For certain frequency profiles of the gain and phase of the parametric amplifier, the squeezed-noise power spectral density can be minimized over the whole electronic bandwidth of the photodetector that is employed in homodyne detection.

Annual Meeting Optical Society of America•Jan 1, 1991•0 citations

Generation of nonclassical photon states using correlated photon pairs and linear feedforward

Gunnar G. Bjork, Y. Yamamoto

It is shown that nonclassical photon states can be produced by generating correlated photon pairs, measuring the idler mode, and manipulating the signal mode using feedforward and linear attenuators, amplifiers, or phase modulators. The minimum achievable Fano factor for such schemes is (2/\ensuremath{\pi}〈n〉${)}^{1/2}$, where 〈n〉 is the mean output photon number. A nondegenerate parametric oscillator followed by linear manipulators can reach this limit. A nondegenerate parametric amplifier followed by linear phase manipulation can produce phase-squeezed states. The minimum achievable phase noise is a factor 1/2G below that of a coherent state, where G is the amplifier gain. The advantages with these schemes are wavelength tunability, potentially very high squeezing bandwidth, and relative simplicity.

Physical Review A•Jun 1, 1988•33 citations

Tunable squeezed-light generation from twin beams using an optical-phase feed-forward scheme: a broadband calculation

Chonghoon Kim, Prem Kumar

Recently we analyzed an optical-phase feed-forward scheme to produce a tunable squeezed-light beam from the twin beams generated by means of nondegenerate parametric amplification [ Opt. Lett.16, 755 ( 1991)]. Here we present a wideband model of this scheme. The noise characteristics of the homodyne detector that measures squeezing properties of the phase-controlled output signal beam from the parametric amplifier are analyzed in detail. To minimize the squeezed-noise power at an arbitrarily given sideband frequency, we calculate the optimum phase feed-forward transfer function. This feed-forward transfer function is realizable through the use of a bandpass filter and an electronic amplifier. For certain frequency profiles of the gain and phase of the parametric amplifier, the squeezed-noise power spectral density can be minimized over the entire bandwidth of the electronic detector that is used in homodyne detection.

Journal of the Optical Society of America B•Aug 1, 1992•3 citations

Use of parametric down-conversion to generate sub-Poissonian light

P. R. Tapster, John Rarity, J.S. Satchell

Two highly noise-correlated light beams are generated by nondegenerate parametric down-conversion. We report the production of sub-Poissonian light in one of the beams by using negative feedback (to the pump) from the other. This nonclassical light source has a postdetection Fano factor of 0.78 over a limited frequency range near 50 Hz with an intensity of about 60 pW.

Physical Review A•Apr 1, 1988•81 citations

Observation of high-intensity sub-Poissonian light using an optical parametric oscillator

Jerome C. Mertz, A. Heidmann, Claude Fabre +2 more

We report the observation of high-intensity sub-Poissonian light using the correlated ``twin'' beams generated by an optical parametric oscillator. The intensity fluctuations in one of these beams are reduced by a feedforward correction mechanism that monitors the intensity of the second beam. The observed reduction in noise power is up to 24% below the shot-noise limit.

Physical Review Letters•Jun 11, 1990•101 citations
We analyze an intensity feedforward scheme to produce a sub-Poissonian (amplitude-squeezed) light beam from the intensity-correlated twin beams generated by a nondegenerate parametric amplifier. Photon-number measurement of the idler beam at the output of the parametric amplifier is linearly fed forward onto the output signal beam using an amplitude modulator. The minimum available Fano factor is shown to be 1/(2g-1), where g is the parametric amplifier gain, and is equal to the nonclassical intensity-noise-reduction factor of the twin beams at the output of the parametric amplifier. By changing the frequency of the input-signal beam, tunable sub-Poissonian light can be generated with this scheme for application in precision absorption spectroscopy.
We analyze an optical-phase feed-forward scheme to produce a squeezed-light beam from intensity-correlated twin beams generated by nondegenerate parametric amplification. The quadrature measurement of the idler beam at the output of the parametric amplifier is linearly fed forward onto the output signal beam with an electro-optic phase modulator. The minimum available squeezing factor is shown to be 1/(2g - 1), where g is the parametric amplifier gain, and is equal to the nonclassical intensity-noise reduction factor of the original twin beams at the output of the parametric amplifier. By changing the frequency of the input signal beam, one can generate tunable squeezed light with this scheme for application in precision spectroscopy.
Recently we analyzed an optical-phase feed-forward scheme to produce a squeezed-light beam from the twin beams generated by nondegenerate optical parametric amplification.1 Our interest in this scheme stems from the possibility it allows for the generation of tunable squeezed light. If the input signal beam to the parametric amplifier is tunable, a tunable squeezed output beam can be obtained for spectroscopic applications.2 In this paper we present a wideband model of this scheme. Noise characteristics of the homodyne detector, that measures squeezing properties of the phase-controlled output signal beam from the parametric amplifier, are analyzed in detail. To minimize the squeezed-noise power at an arbitrarily given sideband frequency, the optimal phase feed-forward transfer function is calculated. This feed-forward transfer function is achievable with a bandpass filter and an electronic amplifier. For certain frequency profiles of the gain and phase of the parametric amplifier, the squeezed-noise power spectral density can be minimized over the whole electronic bandwidth of the photodetector that is employed in homodyne detection.
It is shown that nonclassical photon states can be produced by generating correlated photon pairs, measuring the idler mode, and manipulating the signal mode using feedforward and linear attenuators, amplifiers, or phase modulators. The minimum achievable Fano factor for such schemes is (2/\ensuremath{\pi}〈n〉)1/2{)}^{1/2})1/2, where 〈n〉 is the mean output photon number. A nondegenerate parametric oscillator followed by linear manipulators can reach this limit. A nondegenerate parametric amplifier followed by linear phase manipulation can produce phase-squeezed states. The minimum achievable phase noise is a factor 1/2G below that of a coherent state, where G is the amplifier gain. The advantages with these schemes are wavelength tunability, potentially very high squeezing bandwidth, and relative simplicity.
Recently we analyzed an optical-phase feed-forward scheme to produce a tunable squeezed-light beam from the twin beams generated by means of nondegenerate parametric amplification [ Opt. Lett.16, 755 ( 1991)]. Here we present a wideband model of this scheme. The noise characteristics of the homodyne detector that measures squeezing properties of the phase-controlled output signal beam from the parametric amplifier are analyzed in detail. To minimize the squeezed-noise power at an arbitrarily given sideband frequency, we calculate the optimum phase feed-forward transfer function. This feed-forward transfer function is realizable through the use of a bandpass filter and an electronic amplifier. For certain frequency profiles of the gain and phase of the parametric amplifier, the squeezed-noise power spectral density can be minimized over the entire bandwidth of the electronic detector that is used in homodyne detection.