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 Communications

Observation of sub-poissonian light in parametric downconversion

John Rarity, P. R. Tapster, Eric Jakeman

Published May 1, 1987• 126 citations
Publisher
DOI
10.1016/0030-4018(87)90028-9

Related papers

GENERATION OF SUB-POISSONIAN LIGHT USING PARAMETRIC DOWNCONVERSION

P. R. Tapster, John Rarity, Eric Jakeman

Journal of the Optical Society of America A•Dec 1, 1986•0 citations

Sub-Poissonian Light Generation in Light-Emitting Diodes

Jungsang Kim, Seema Somani, Y. Yamamoto

Springer series in photonics•Jan 1, 2001•0 citations

Generation of Sub-Poissonian Light by Light-Emitting Diodes Connected in Sereis.

G. Shinozaki, Abe Jun-ichi, Hirano Takuya +2 more

日本物理学会講演概要集(分科会)•Jan 1, 1995•0 citations

Generation of Weak Sub-Poissonian Light by High-Speed Light-Emitting Diodes II

Gen Shinozaki, Takuya Hirano, T. Kuga +1 more

日本物理学会講演概要集•Mar 16, 1995•0 citations

Nonclassical Effects in Parametric Downconversion

John Rarity, P. R. Tapster

In parametric downconversion the quantum effects arise because two photons are created from one pump photon. Detection of photons in one train can be used to modify the quantum statistics of the other train to produce antibunched and/or sub-poissonian light. This chapter reports on two experiments of this type. The first employs single photon detection techniques and a fast optical shutter to create antibunched and slightly sub-poissonian light. The second uses analogue detection and feedback to produce sub-poissonian light at picowatt power levels with a Fano factor of 0.78 over a limited bandwidth. Sub-poissonian light is potentially useful in finite dose transmission measurements and the high degree of temporal coincidence of the downconverted photon pairs can be exploited in absolute measurement of detector quantum efficiency. The detailed shape of the fourth order interference effect can be related to the fourier transform of the photon bandwidth determined by the phase matching uncertainty and aperture size.

CRC Press eBooks•Aug 12, 2020•4 citations

Heralded source of bright multi-mode mesoscopic sub-Poissonian light

T. Sh. Iskhakov, Vladyslav C. Usenko, Ulrik L. Andersen +3 more

In a direct detection scheme, we observed 7.8 dB of twin-beam squeezing for multi-mode two-color squeezed vacuum generated via parametric downconversion. Applying post-selection, we conditionally prepared a sub-Poissonian state of light containing 6.3·105 photons per pulse on the average with the Fano factor 0.63±0.01. The scheme can be considered as the heralded preparation of pulses with the mean energy varying between tens and hundreds of fJ and the uncertainty considerably below the shot-noise level. Such pulses can be used in metrology (for instance, for radiometer calibration), as well as for probing multi-mode nonlinear optical effects.

arXiv:1511.08460•Optics Letters•May 2, 2016•54 citations
In parametric downconversion the quantum effects arise because two photons are created from one pump photon. Detection of photons in one train can be used to modify the quantum statistics of the other train to produce antibunched and/or sub-poissonian light. This chapter reports on two experiments of this type. The first employs single photon detection techniques and a fast optical shutter to create antibunched and slightly sub-poissonian light. The second uses analogue detection and feedback to produce sub-poissonian light at picowatt power levels with a Fano factor of 0.78 over a limited bandwidth. Sub-poissonian light is potentially useful in finite dose transmission measurements and the high degree of temporal coincidence of the downconverted photon pairs can be exploited in absolute measurement of detector quantum efficiency. The detailed shape of the fourth order interference effect can be related to the fourier transform of the photon bandwidth determined by the phase matching uncertainty and aperture size.
In a direct detection scheme, we observed 7.8 dB of twin-beam squeezing for multi-mode two-color squeezed vacuum generated via parametric downconversion. Applying post-selection, we conditionally prepared a sub-Poissonian state of light containing 6.3·105 photons per pulse on the average with the Fano factor 0.63±0.01. The scheme can be considered as the heralded preparation of pulses with the mean energy varying between tens and hundreds of fJ and the uncertainty considerably below the shot-noise level. Such pulses can be used in metrology (for instance, for radiometer calibration), as well as for probing multi-mode nonlinear optical effects.