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

Quantum Electronics and Laser Science Conference

Biphoton in a two-level cooled atomic ensemble

Jianming Wen, Shengwang Du, Morton H. Rubin

Published May 1, 2007• 0 citations
Publisher

Abstract

The temporal correlation of biphotons, generated from a two-level cooled atomic system, displays a photon anti-bunching effect, which corresponds to the interference between two types of nonlinear four-wave mixing processes occurring in such a medium.
DOI
10.1109/qels.2007.4431739

Related papers

Four-Wave Mixing and Two-Photon Interference in a Three-Level Atomic Ensemble

Shengwang Du, Eun Oh, Jianming Wen +1 more

Interference of degenerate four-wave mixing in a three-level atomic ensemble is studied in both classical and quantum regimes. Biphoton interference shows photon anti-bunching or bunching effect under different situations.

Frontiers in Optics•Jan 1, 2007•0 citations

Four-Wave Mixing and Biphoton Generation in a Two-Level System

Shengwang Du, Jianming Wen, Morton H. Rubin +1 more

We find that in a two-level system there are two kinds of four-wave mixing processes which destructively contribute to the third-order nonlinear susceptibility. In a paired-photon generation scheme by using a single retroreflected pump beam, these two processes occur with definite time orders. The biphoton temporal correlation, which is measured with a back-to-back geometry in a laser-cooled two-level atomic ensemble, shows a damped Rabi oscillation and photon antibunching. Without suppressing the background of Rayleigh scattering, the upper limit of Cauchy criteria is estimated.

Physical Review Letters•Jan 29, 2007•130 citations

Correlation in photon pairs generated using four-wave mixing in a cold atomic ensemble

Andrew R. Ferdinand, Alejandro Manjavacas, F. E. Becerra

Bulletin of the American Physical Society•Jun 8, 2017•0 citations

Biphoton generation in a two-level atomic ensemble

Jianming Wen, Shengwang Du, Morton H. Rubin

We have theoretically studied the space-time entangled biphoton state generated from a two-level atomic system. In the photon counting measurement, the two-photon coincidence counting rate is a damped oscillation. The oscillation period is determined by the effective Rabi frequency and the damping rate is determined by the linewidth of the inhomogeneous-broadened ground state and the dipole dephasing rate. In an optical-pathway-balanced configuration, the two-photon temporal correlation shows an antibunching effect which corresponds to the interference between two types of nonlinear four-wave mixing processes occurring in such a two-level system. The visibility of the normalized second-order quantum coherence function ${g}^{(2)}(\ensuremath{\tau})$ increases along with the increase of the effective Rabi frequency, but has an upper limit at 45%. We find agreement between the theory and the experiments [P. Kolchin et al., Phys. Rev. Lett. 97, 113602 (2006); S. Du, J.-M. Wen, M. H. Rubin, and G. Y. Yin, ibid 98, 053601 (2007)].

Physical Review A•Mar 19, 2007•61 citations

Generation of a Non-Classical Correlated Photon Pair via Spontaneous Four-Wave Mixing in a Cold Atomic Ensemble

陆小松, 陈群峰, 史保森 +1 more

Chinese Physics Letters•Jan 1, 2009•0 citations

Photon-bunching, photon-antibunching and the nonclassical photon statistics of coherent light coupled to a driven harmonic oscillator of time dependent mass and frequency

Swapan Mandal

Optics Communications•Jul 10, 2004•12 citations
We find that in a two-level system there are two kinds of four-wave mixing processes which destructively contribute to the third-order nonlinear susceptibility. In a paired-photon generation scheme by using a single retroreflected pump beam, these two processes occur with definite time orders. The biphoton temporal correlation, which is measured with a back-to-back geometry in a laser-cooled two-level atomic ensemble, shows a damped Rabi oscillation and photon antibunching. Without suppressing the background of Rayleigh scattering, the upper limit of Cauchy criteria is estimated.
We have theoretically studied the space-time entangled biphoton state generated from a two-level atomic system. In the photon counting measurement, the two-photon coincidence counting rate is a damped oscillation. The oscillation period is determined by the effective Rabi frequency and the damping rate is determined by the linewidth of the inhomogeneous-broadened ground state and the dipole dephasing rate. In an optical-pathway-balanced configuration, the two-photon temporal correlation shows an antibunching effect which corresponds to the interference between two types of nonlinear four-wave mixing processes occurring in such a two-level system. The visibility of the normalized second-order quantum coherence function ${g}^{(2)}(\ensuremath{\tau})$ increases along with the increase of the effective Rabi frequency, but has an upper limit at 45%. We find agreement between the theory and the experiments [P. Kolchin et al., Phys. Rev. Lett. 97, 113602 (2006); S. Du, J.-M. Wen, M. H. Rubin, and G. Y. Yin, ibid 98, 053601 (2007)].