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

Acta Sinica Quantum Optica

Quantum Properties of Light Field Interacting with Two Different Atoms

Shou Zhang

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

The quantum properties of light in the system of two different atoms interacting with two-mode squeezing vacuum field are studied.The effect of the relative coupling constant(R=g1/g2) and initial squeezed parameter r on light squeezing effect and the photon bunching and antibunching are discussed.The numerical results show that vibration range of quantum fluctuation,the biggest squeezing depth and squeezing time and vibration amplitude of second-order coherence is affected by the initial squeezed parameter r.The variation of quantum fluctuation and second-order coherence versus time are affected by the relative coupling constant R.As a result,the squeezing time of quantum fluctuation,the time when light field is in non-classical states and the degree of photon antibunching are also affected by it,but to but it doesn′t have obvious influence on light squeezing depth.

Related papers

Coherence Properties of Light Field Interacting with Two Different Atoms

Shou Zhang

The coherence properties of light in the system of two different atoms interacting with two-mode squeezing vacuum field were studied.The effect of the relative coupling constant (R=g1/g2) and initial squeezed parameter on the second-order coherence,mode-correlation properties and Cauchu- Achwartz inequality were discussed.The results show that when the initial squeezed parameter is smaller,the phone bunching and antibunching are appearing by turns,and the dgree of mode-correlation property is more stronger.When the initial squeezed parameter is bigger,the photons are appearing bunching and the degree of mode-correlation propertity is weaken.The variation of second-order coherence,mode-correlation properties and Cauchy-Schwartz inequality versus time is affected by the relative coupling constant R,but the relative coupling constant can′t change the non-classical properties of light.

ACTA PHOTONICA SINICA•Jan 1, 2008•1 citation

Statistic properties of photon in the system of two coupling atoms interacting with two-mode squeezed vacuum field in Kerr medium

Fang Jia-Yuan, Huang Chun-Jia, Huang Zu-hong +2 more

The statistic properties of photons in the system of two-mode squeezing vacuum field interacting with two coupling atoms in Kerr medium are studied by means of quantum theory.The influences of coupling constant χ, initial squeezed parameter r and the atomic initial state are discussed. The results obtained by means of numerical method show that the photon bunching and anti-bunching appear alternately, and the correlation of the two modes of light is both positive and non-classical. The periodical collapse-revival phenomenon of the time evolution of the second-order coherence degree of the two-mode field appears due to the influence of the Kerr effect. The periods of the collapse-revival become short up to disappearance with increasing Kerr effect.

Acta Physica Sinica•Jan 1, 2004•0 citations

Quantum properties of light in the two-photon T-C model in Kerr medium

Fang Jia-Yuan, Xiaohong Yan, Ming Tao Zhou +2 more

In this paper, the quantum properties of light in a system of two coupling atoms interacting with a single-model squeezed vacuum field at the two-photon transition in Kerr medium are studied by means of quantum theory.The influences of the Kerr medium and the dipole-dipole interaction between atoms are discussed. The results show that when the Kerr effect and the dipole-dipole interaction between atoms may be neglected, the fluctuation of U2 can be squeezed periodically. With increasing the Kerr effect and the dipole-dipole interaction between atoms, the squeezing effect of light gradually becomes weak and the squeezing time of light gradually decreases. The periodical collapse-revival phenomenon of the time evolution of the second-order coherence degree of the field appears, which is caused by the influence of the Kerr effect and the dipole-dipole interaction between atoms. No matter how large are the coupling constants, the photon bunching always appears.

Acta Physica Sinica•Jan 1, 2004•1 citation

Squeezing properties of atom and light in system of squeezed vacuum field Raman interacting with two coupled-atoms

Fengqin Zhang

The dipole difference squeezing of a pair atoms is defined. The time evolution properties of difference squeezing of atomic dipole and amplitude-squared squeezing of light in the system of a single-mode squeezing vacuum field Raman interacting with two coupled-atoms are studied by means of quantum theory. Using the numerical method, influences of the initial squeezing parameter of light, the atomic initial state and the intensity of dipole-dipole interaction between atoms on the squeezing properties of atom and light are discussed.

Chinese Journal of Quantum Electronics•Jan 1, 2010•0 citations

The Quantum Properties of the System of Two-Mode SU(1,1) Coherent States Interacting with Bose-Einstein Condensate of V-type Three-Level Atoms

Sun Chang-yong

The quantum properties and amplitude-squared squeezing effects of light field are studied in the system of two-mode SU(1,1) coherent states interacting with Bose-Einstein Condensate of V-type three-level atoms,and the squeezing properties of atomic laser have also been discussed.The results show that the quantum correlation properties of light field keep invariant in the process of interaction between light field and atomic BEC,and the photons of each mode produce antibunching effect.The correlation between the two modes shows the non-classical correlation in the process of interaction.There are amplitude-squared squeezing effects in these quantum states.The influence of field parameter and atom parameter on the depth and duration of squeezing are investigated.The two-mode atomic laser can be squeezed,but it is difficult to squeeze.The degree of squeezing is determined by initial light field.

Acta Sinica Quantum Optica•Jan 1, 2011•0 citations

Photons Correlation Properties of Two-mode Squeezed Field Interacting with a V-type Moving Atom

Duo Zhang, Lin Shu-yuan

two-mode squeezed vacuum field interacting with a V-type three-level moving atom is investigated. We can get analytic expressions of second-order correlation function and two-mode correlation function. The influence of atomic motion, the field structure and intensity of photons on second-order correlation function and two-mode correlation function are obtained by numerical calculation. The results indicate that correlation function and photon bunching increase obviously when intensity of photons increase; photon bunching and antibunching don't change when atomic motion and the field structure increase, but the period of photon bunching and antibunching reduce greatly.

Acta Sinica Quantum Optica•Jan 1, 2005•0 citations
The quantum properties of light in the system of two different atoms interacting with two-mode squeezing vacuum field are studied.The effect of the relative coupling constant(R=g1/g2) and initial squeezed parameter r on light squeezing effect and the photon bunching and antibunching are discussed.The numerical results show that vibration range of quantum fluctuation,the biggest squeezing depth and squeezing time and vibration amplitude of second-order coherence is affected by the initial squeezed parameter r.The variation of quantum fluctuation and second-order coherence versus time are affected by the relative coupling constant R.As a result,the squeezing time of quantum fluctuation,the time when light field is in non-classical states and the degree of photon antibunching are also affected by it,but to but it doesn′t have obvious influence on light squeezing depth.
The coherence properties of light in the system of two different atoms interacting with two-mode squeezing vacuum field were studied.The effect of the relative coupling constant (R=g1/g2) and initial squeezed parameter on the second-order coherence,mode-correlation properties and Cauchu- Achwartz inequality were discussed.The results show that when the initial squeezed parameter is smaller,the phone bunching and antibunching are appearing by turns,and the dgree of mode-correlation property is more stronger.When the initial squeezed parameter is bigger,the photons are appearing bunching and the degree of mode-correlation propertity is weaken.The variation of second-order coherence,mode-correlation properties and Cauchy-Schwartz inequality versus time is affected by the relative coupling constant R,but the relative coupling constant can′t change the non-classical properties of light.
The statistic properties of photons in the system of two-mode squeezing vacuum field interacting with two coupling atoms in Kerr medium are studied by means of quantum theory.The influences of coupling constant χ, initial squeezed parameter r and the atomic initial state are discussed. The results obtained by means of numerical method show that the photon bunching and anti-bunching appear alternately, and the correlation of the two modes of light is both positive and non-classical. The periodical collapse-revival phenomenon of the time evolution of the second-order coherence degree of the two-mode field appears due to the influence of the Kerr effect. The periods of the collapse-revival become short up to disappearance with increasing Kerr effect.
In this paper, the quantum properties of light in a system of two coupling atoms interacting with a single-model squeezed vacuum field at the two-photon transition in Kerr medium are studied by means of quantum theory.The influences of the Kerr medium and the dipole-dipole interaction between atoms are discussed. The results show that when the Kerr effect and the dipole-dipole interaction between atoms may be neglected, the fluctuation of U2 can be squeezed periodically. With increasing the Kerr effect and the dipole-dipole interaction between atoms, the squeezing effect of light gradually becomes weak and the squeezing time of light gradually decreases. The periodical collapse-revival phenomenon of the time evolution of the second-order coherence degree of the field appears, which is caused by the influence of the Kerr effect and the dipole-dipole interaction between atoms. No matter how large are the coupling constants, the photon bunching always appears.
The dipole difference squeezing of a pair atoms is defined. The time evolution properties of difference squeezing of atomic dipole and amplitude-squared squeezing of light in the system of a single-mode squeezing vacuum field Raman interacting with two coupled-atoms are studied by means of quantum theory. Using the numerical method, influences of the initial squeezing parameter of light, the atomic initial state and the intensity of dipole-dipole interaction between atoms on the squeezing properties of atom and light are discussed.
The quantum properties and amplitude-squared squeezing effects of light field are studied in the system of two-mode SU(1,1) coherent states interacting with Bose-Einstein Condensate of V-type three-level atoms,and the squeezing properties of atomic laser have also been discussed.The results show that the quantum correlation properties of light field keep invariant in the process of interaction between light field and atomic BEC,and the photons of each mode produce antibunching effect.The correlation between the two modes shows the non-classical correlation in the process of interaction.There are amplitude-squared squeezing effects in these quantum states.The influence of field parameter and atom parameter on the depth and duration of squeezing are investigated.The two-mode atomic laser can be squeezed,but it is difficult to squeeze.The degree of squeezing is determined by initial light field.
two-mode squeezed vacuum field interacting with a V-type three-level moving atom is investigated. We can get analytic expressions of second-order correlation function and two-mode correlation function. The influence of atomic motion, the field structure and intensity of photons on second-order correlation function and two-mode correlation function are obtained by numerical calculation. The results indicate that correlation function and photon bunching increase obviously when intensity of photons increase; photon bunching and antibunching don't change when atomic motion and the field structure increase, but the period of photon bunching and antibunching reduce greatly.