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

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Thermal stimulation of cooperative two-photon decay in a microcavity

N. A. Enaki, Mihai Macovei

Published Sep 25, 2001• 0 citations
Publisher

Abstract

The cooperative two-photon spontaneous decay of an excited atomic system in a micro-cavity is investigated. We demonstrate that the presence of a small number of thermalized photons in the microcavity mode stimulate the cooperative generation rate of the coherent entangled photon pairs.
DOI
10.1117/12.441315

Related papers

Two-photon cooperative decay in a cavity in the presence of a thermalized electromagnetic field

N. A. Enaki, M. A. Makovei

We study the cooperative two-photon spontaneous decay of an excited atomic system in a microcavity whose size is of the order of several wavelengths of atomic radiation. We show that a thermalized electromagnetic field in the microcavity strongly affects the two-photon cooperative spontaneous emission of radiation. The increase in the rate of spontaneous cooperative decay is due to the presence of a small number of thermalized photons in a microcavity mode. At low temperatures, the two-photon absorption probability is found to be a linear function of the two-photon flux, and photon superbunching is observed.

Journal of Experimental and Theoretical Physics•Apr 1, 1999•16 citations

The nonlinear cooperative decay process of three-level systems stimulated by a thermal field and the generation of entangled photon pairs

N. A. Enaki, Tudor Roşca

The two-photon processes between the two- and single-photon transitions of three-level inverted radiators stimulated by a thermal field are revised. This approach opens new possibilities in the manipulation of the decay process and the generation of entangled photon pairs. The influence of the thermal bath on the correlation between the cascade three-level subsystems and the two-quantum transitions of the dipole-forbidden radiators is studied. This effect corresponds to the situation where the total energy of emitted photons by three-level dipole-active radiators in the cascade configuration enters into two-photon resonance with dipole-forbidden transitions of the second atom.

Physica Scripta•Apr 1, 2014•0 citations

Cooperative Two-Quantum Interaction of Excited System with Bath

N. A. Enaki, Vitalie Eremeev

The problem of the two-photon coherent generation of entanglement photon pairs in Quantum Optics has been intensively studied for the last years. It is important to note that the two-quantum cooperative effects play a main role in other fields of physics as well. The collective processes in Condensed Matter have many analogical proprieties with cooperative radiation effects in Quantum Optics. Recently the two-quantum generation of entanglement photons and its applications in information technology and communication has been intensively studied. The new cooperative emission phenomenon for dipole-forbidden transitions of inverted system of radiators can be observed in the processes of the two-photon spontaneous emission.

arXiv:cond-mat/0406604•Jun 24, 2004•0 citations

Cooperative Resonance Interaction Between One-and Two-Photon Super-fluorescences Trough the Vacuum Field

N. A. Enaki

The theoretical approach takes in consideration the cooperative phenomena which appear between three particle in two-photon resonance in the process of single- and two- photon decay. This type of single- and two-quanta cooperative effect between three subsystems of radiators are described by master equation which takes into account three-particle cooperative resonance in the system. The resonance between the spontaneous emissions by two- and single photon transitions of three inverted radiators from the ensemble is proposed in order to accelerate the collective decay rate of the entangled photon pairs generated by the system. This effect is accompanied with the interferences between one-photon and two-quantum collective transitions of three inverted radiators from the ensemble. The three particle collective decay rate is defined in the description of three atomic correlation functions.

Journal of Physics Conference Series•Feb 27, 2012•2 citations

Enhanced Two-Photon Processes in Quantum Dots inside Photonic Crystal Nanocavities and Quantum Information Processing Applications

Ziliang Carter Lin, Jelena Vuckovic A

We show that the two-photon transition rates of quantum dots coupled to nanocavities are enhanced by up to 8 orders of magnitude relative to quantum dots in bulk host. We then propose how to take advantage of this enhancement to implement coherent quantum dot excitation by two-photon absorption, entangled photon pair generation by two-photon spontaneous emission, and single-photon generation at telecommunication wavelengths by two-photon stimulated and spontaneous emission.

arXiv:0905.4945•May 29, 2009•0 citations

NEW NONLINEAR OPTICAL EFFECTS IN EMISSION AND ABSORPTION OF INDIVUDUAL RESONANCE PHOTONS BY TWO LEVEL ATOMS TRAPPED IN DAMPED MICROCAVITY

Vladislav Cheltsov

The new cooperative nonlinear effects in emission and absorption of resonance photon by two level atoms trapped in damped single-mode one-dimensional microcavity have been revealed and investigated nonpertubatibely. Two cases have been considered: the case of an excited ultracold atom localized initially in the ground vibrational state of the trap's parabolic well and the case of one and two two level motionless atoms in diferent initial states. The dynamics and spectrum of emission (absorption) have been shown to be determined in particular by o --the rate of decaying of mode in the empty cavity. The gigantic optical ''Moessbauer'' effect has been discovered under resonance condition \omega _v=2g . Out of this condition there arise numerous resonances of the higher order on different frequencies so that one thermal impulse has been observed instead of the ''Moessbauer peak''. In the case of two motonless atoms non-emitting (''dark'') antisymmetric and emitting (''luminous'') symmetric atomic superpositional states have been revealed.

Molecular crystals and liquid crystals science and technology. Section B, Nonlinear optics/Molecular crystals and liquid crystals scienceand technology. Section B, Nonlinear optics/Nonlinear optics•Jan 1, 2002•0 citations
We study the cooperative two-photon spontaneous decay of an excited atomic system in a microcavity whose size is of the order of several wavelengths of atomic radiation. We show that a thermalized electromagnetic field in the microcavity strongly affects the two-photon cooperative spontaneous emission of radiation. The increase in the rate of spontaneous cooperative decay is due to the presence of a small number of thermalized photons in a microcavity mode. At low temperatures, the two-photon absorption probability is found to be a linear function of the two-photon flux, and photon superbunching is observed.
The two-photon processes between the two- and single-photon transitions of three-level inverted radiators stimulated by a thermal field are revised. This approach opens new possibilities in the manipulation of the decay process and the generation of entangled photon pairs. The influence of the thermal bath on the correlation between the cascade three-level subsystems and the two-quantum transitions of the dipole-forbidden radiators is studied. This effect corresponds to the situation where the total energy of emitted photons by three-level dipole-active radiators in the cascade configuration enters into two-photon resonance with dipole-forbidden transitions of the second atom.
The problem of the two-photon coherent generation of entanglement photon pairs in Quantum Optics has been intensively studied for the last years. It is important to note that the two-quantum cooperative effects play a main role in other fields of physics as well. The collective processes in Condensed Matter have many analogical proprieties with cooperative radiation effects in Quantum Optics. Recently the two-quantum generation of entanglement photons and its applications in information technology and communication has been intensively studied. The new cooperative emission phenomenon for dipole-forbidden transitions of inverted system of radiators can be observed in the processes of the two-photon spontaneous emission.
The theoretical approach takes in consideration the cooperative phenomena which appear between three particle in two-photon resonance in the process of single- and two- photon decay. This type of single- and two-quanta cooperative effect between three subsystems of radiators are described by master equation which takes into account three-particle cooperative resonance in the system. The resonance between the spontaneous emissions by two- and single photon transitions of three inverted radiators from the ensemble is proposed in order to accelerate the collective decay rate of the entangled photon pairs generated by the system. This effect is accompanied with the interferences between one-photon and two-quantum collective transitions of three inverted radiators from the ensemble. The three particle collective decay rate is defined in the description of three atomic correlation functions.
The new cooperative nonlinear effects in emission and absorption of resonance photon by two level atoms trapped in damped single-mode one-dimensional microcavity have been revealed and investigated nonpertubatibely. Two cases have been considered: the case of an excited ultracold atom localized initially in the ground vibrational state of the trap's parabolic well and the case of one and two two level motionless atoms in diferent initial states. The dynamics and spectrum of emission (absorption) have been shown to be determined in particular by o --the rate of decaying of mode in the empty cavity. The gigantic optical ''Moessbauer'' effect has been discovered under resonance condition \omega _v=2g . Out of this condition there arise numerous resonances of the higher order on different frequencies so that one thermal impulse has been observed instead of the ''Moessbauer peak''. In the case of two motonless atoms non-emitting (''dark'') antisymmetric and emitting (''luminous'') symmetric atomic superpositional states have been revealed.