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

Realization of quantum correlation transfer between twin beams by conditional preparation technique

Yun Zhang, Kazuhiro Hayasaka, Katsuyuki Kasai

Published Jul 18, 2006• 0 citations
Publisher
DOI
10.1016/j.optcom.2006.05.071

Related papers

Conditional preparation of a quantum state in the continuous variable regime: experimental generation of non classical states from twin beams

Laurat, Coudreau, Treps +2 more

Conference on Lasers and Electro-Optics•Jan 1, 2004•0 citations

Conditional transfer of quantum correlation in the intensity of twin beams

Yun Zhang, Kazuhiro Hayasaka, Katsuyuki Kasai

A conditional protocol of transferring quantum correlations in a continuous variable regime was experimentally demonstrated. The quantum correlation in two pairs of twin beams, each characterized by intensity-difference squeezing of $7.0\ifmmode\pm\else\textpm\fi{}0.3\phantom{\rule{0.3em}{0ex}}\mathrm{dB}$, was transferred to two initially independent idler beams. The quantum-correlation transfer resulted in intensity-difference squeezing of $4.0\ifmmode\pm\else\textpm\fi{}0.2\phantom{\rule{0.3em}{0ex}}\mathrm{dB}$ between two idler beams. The dependence of the preparation probability and transfer fidelity on the selection bandwidth was also studied.

arXiv:quant-ph/0504032•Physical Review A•Jun 30, 2005•26 citations

CONDITIONAL GENERATION OF TWIN SUB-POISSONIAN BEAMS VIA POST-SELECTION

YUN ZHANG, Kazuhiro Hayasaka, Katsuyuki Kasai

We report the experimental demonstration of generation of twin sub-Poissonian beams by using a conditional preparation technique. By this simple technique, we generate twin sub-Poissonian beams with a quantum correlation of 4.0 ± 0.2 dB between two sub-Poissonian beams of 4.0 ± 0.3 dB noise reductions from two sets of initially independent twin beams, each characterized by intensity-difference squeezing of 7.0 ± 0.3 dB.

International Journal of Modern Physics B•May 20, 2006•3 citations

Complete control of spatial correlations in quantum-correlated twin beams

Gaurav Nirala, Siva T. Pradyumna, Ashok Kumar +1 more

Bulletin of the American Physical Society•Jun 3, 2021•0 citations

Quantum correlated twin beams

John G. Rarity, P. R. Tapster, Juan Ariel Levenson +7 more

Applied Physics B•Sep 1, 1992•32 citations

Conditional Preparation of a Quantum State in the Continuous Variable Regime: Generation of a sub-Poissonian State from Twin Beams

Julien Laurat, T. Coudreau, Nicolas Treps +2 more

We report the first experimental demonstration of conditional preparation of a nonclassical state of light in the continuous variable regime. Starting from a nondegenerate optical parametric oscillator which generates above threshold quantum intensity correlated signal and idler "twin beams," we keep the recorded values of the signal intensity only when the idler intensity falls inside a band narrower than its standard deviation. By this very simple technique, we generate a sub-Poissonian state 4.4 dB (64%) below shot noise from twin beams exhibiting 7.5 dB (82%) of noise reduction in the intensity difference.

arXiv:quant-ph/0304111•Physical Review Letters•Nov 18, 2003•114 citations
A conditional protocol of transferring quantum correlations in a continuous variable regime was experimentally demonstrated. The quantum correlation in two pairs of twin beams, each characterized by intensity-difference squeezing of $7.0\ifmmode\pm\else\textpm\fi{}0.3\phantom{\rule{0.3em}{0ex}}\mathrm{dB}$, was transferred to two initially independent idler beams. The quantum-correlation transfer resulted in intensity-difference squeezing of $4.0\ifmmode\pm\else\textpm\fi{}0.2\phantom{\rule{0.3em}{0ex}}\mathrm{dB}$ between two idler beams. The dependence of the preparation probability and transfer fidelity on the selection bandwidth was also studied.
We report the first experimental demonstration of conditional preparation of a nonclassical state of light in the continuous variable regime. Starting from a nondegenerate optical parametric oscillator which generates above threshold quantum intensity correlated signal and idler "twin beams," we keep the recorded values of the signal intensity only when the idler intensity falls inside a band narrower than its standard deviation. By this very simple technique, we generate a sub-Poissonian state 4.4 dB (64%) below shot noise from twin beams exhibiting 7.5 dB (82%) of noise reduction in the intensity difference.