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

Institute of Physics eBooks

Collective atomic emission

J T Mendonça

Published Sep 1, 2022• 0 citations
Publisher

Abstract

Here we consider the collective spontaneous decay of an ensemble of atoms, when stimulated emission is not present, a process called superradiance. This chapter includes a short description of cyclotron superradiance.
DOI
10.1088/978-0-7503-2786-2ch8

Related papers

Inhibition of collective spontaneous decay and superradiance in an ensemble of sufficiently high quantity of excited identical atoms

Ashat M. Basharov

Physics Letters A•May 8, 2011•9 citations

Spatial Coherence of Light in Collective Spontaneous Emission

David C. Gold, Preston Huft, C. Young +4 more

When a quantum system is put into an excited state, it will decay back to the ground state through a process termed spontaneous emission.It is generally assumed that spontaneous emissions between different individual emitters will not be coherent with each other; to produce coherent light, one would need population inversion and stimulated emission.In this work, we show that an optically thin ensemble of 11 000 radiating atoms spontaneously organizes to produce spatially coherent light.The reason for this coherence is collective coupling of the individual emitters via Dicke superradiance and subradiance (as opposed to amplification through stimulated emission).

arXiv:2112.07580•PRX Quantum•Mar 9, 2022•25 citations

Correlated spontaneous emission on the Danube

Eyob Alebachew Sete, Anatoly A. Svidzinsky, Hichem Eleuch +3 more

We consider collective spontaneous emission from an ensemble of N identical two-level atoms prepared by absorption of a single photon–a.k.a. single photon Dicke superradiance. We discuss dynamical properties of superradiance for small (R ≪ λ) and large (R ≫ λ) atomic cloud. Moreover, we address the effects of virtual processes on collective decay rate and Lamb shift. It turns out that virtual processes lead to relatively small yet interesting effects on the time evolution of a rapidly decaying state. However, such processes substantially modify the dynamics of trapped states by bringing in new channels of decay.

Journal of Modern Optics•Mar 1, 2010•55 citations

A Quantum Electrodynamic View of Superradiance as a Competition Between Stimulated and Spontaneous Atomic Decay

Kenneth G. Whitney

Springer eBooks•Jan 1, 1973•1 citation

Superradiant Neutrino Lasers from Radioactive Condensates

B. J. P. Jones, Joseph A. Formaggio

Superradiance emerges from collective spontaneous emission in optically pumped gases, and is characterized by photon emission enhancements of up to 1/4N^{2} in an N atom system. The gain mechanism derives from correlations developed within the decay medium rather than from stimulated emission as in lasing, so an analog of this process should be possible for fermionic final states. We introduce here the concept of superradiant neutrino emission from a radioactive Bose Einstein condensate, which can form the basis for a superradiant neutrino laser. A plausible experimental realization based on a condensate of electron-capture isotope ^{83}Rb could exhibit effective radioactive decay rates accelerated from 86.2 days to minutes in viably sized rubidium condensates of 10^{6} atoms.

arXiv:2412.11765•Physical Review Letters•Jul 8, 2025•9 citations

A Viewpoint on: Superradiant Emission from a Collective Excitation in a Semiconductor

John M. Lupton, T. Laurent, Yanko Todorov +5 more

•Jan 1, 2015•0 citations
When a quantum system is put into an excited state, it will decay back to the ground state through a process termed spontaneous emission.It is generally assumed that spontaneous emissions between different individual emitters will not be coherent with each other; to produce coherent light, one would need population inversion and stimulated emission.In this work, we show that an optically thin ensemble of 11 000 radiating atoms spontaneously organizes to produce spatially coherent light.The reason for this coherence is collective coupling of the individual emitters via Dicke superradiance and subradiance (as opposed to amplification through stimulated emission).
We consider collective spontaneous emission from an ensemble of N identical two-level atoms prepared by absorption of a single photon–a.k.a. single photon Dicke superradiance. We discuss dynamical properties of superradiance for small (R ≪ λ) and large (R ≫ λ) atomic cloud. Moreover, we address the effects of virtual processes on collective decay rate and Lamb shift. It turns out that virtual processes lead to relatively small yet interesting effects on the time evolution of a rapidly decaying state. However, such processes substantially modify the dynamics of trapped states by bringing in new channels of decay.
Superradiance emerges from collective spontaneous emission in optically pumped gases, and is characterized by photon emission enhancements of up to 1/4N^{2} in an N atom system. The gain mechanism derives from correlations developed within the decay medium rather than from stimulated emission as in lasing, so an analog of this process should be possible for fermionic final states. We introduce here the concept of superradiant neutrino emission from a radioactive Bose Einstein condensate, which can form the basis for a superradiant neutrino laser. A plausible experimental realization based on a condensate of electron-capture isotope ^{83}Rb could exhibit effective radioactive decay rates accelerated from 86.2 days to minutes in viably sized rubidium condensates of 10^{6} atoms.