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

Journal of Physics B Atomic Molecular and Optical Physics

Spontaneous emission from an extended wavepacket

Kazimierz Rza̧żewski, W. Żakowicz

Published Jul 14, 1992• 37 citations
Publisher

Abstract

The authors study the spontaneous emission of an atom described by an extended wavepacket. They show that the shape of the emitted line is affected by the Doppler shifts and carries the information of the initial wavefunction. The total intensity is found to exhibit a standard dipole pattern.
DOI
10.1088/0953-4075/25/13/001

Related papers

Tailoring spontaneous emission rates from atomic systems with shaped free-electron wavepackets

Jeremy Zhen Jie Lim, Yee Sin Ang, L. K. Ang +1 more

We show that electron-photon and atom-photon interactions can be engineered to interfere with each other, allowing us to tailor the total spontaneous emission rate through the shape of quantum electron wavepackets.

Conference on Lasers and Electro-Optics•Jan 1, 2022•0 citations

Spontaneous emission from a trapped atom

Hubert Stoop, Kazimierz Rza̧żewski

We solve a problem of spontaneous emission from an atom trapped in a harmonic binding potential for several initial states of the center of mass: the ground state, the thermal state, and the coherent state. The spectral and temporal properties of the emitted light are discussed. We stress the role of the Doppler shift.

Physical Review A•Aug 1, 1995•7 citations

Spontaneous emission from an extended wave packet: Field correlations

Ole Steuernagel, Henryk Paul

Utilizing a recently found solution to the problem of a spontaneously radiating atom with an extended center-of-mass wave function [K. Rza\ifmmode \mbox{\c{}}\else \c{}\fi{}\ifmmode \dot{z}\else \.{z}\fi{}ewski and W. \ifmmode \dot{Z}\else \.{Z}\fi{}akowicz, J. Phys. B 25, L319 (1992)] it is shown, for nonrelativistic atomic velocities, that the field density matrix is a statistical mixture of parts corresponding to emission from different positions within the wave packet. \textcopyright{} 1996 The American Physical Society.

Physical Review A•May 1, 1996•11 citations

Spontaneous emission of a confined atom

Kazimierz Rza̧żewski, W. Żakowicz

Modifications of a natural emission line of a free atom, due to its concentrated center of mass wave-function, have been studied. The Doppler shifts, associated with the corresponding momenta distribution of the wave packet, are responsible for the shape of the emitted line. We found, that the modifications of the emission line shape do not cause any changes in the life time and the total radiation intensity.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Sep 24, 1993•0 citations

Cooperative Spontaneous Emission from an Initially Fully Excited System of Three Identical Two‐level Atoms

Th. Richter

Abstract Using Lehmberg's master equation and taking into account dipole‐dipole near‐field interaction the time‐dependent intensity pattern, intensity – and angular correlations of the cooperative spontaneous radiation from an initially fully excited system of three identical two‐level atoms are calculated. The intensity pattern developes lobes in different directions at different times in such a way that contrary to the two‐atom system the spatial distribution of the total number of the emitted photons differs from that of the single‐atom radiation pattern. In particular three atoms placed in proper distances on a straight line emit preferentially their energy along this line. At the beginning of the emission process the probability to find two photons simultaneously in the same (or geometrical equivalent) direction is always highest but in the course of time, contrary to the two‐atom case, it may well happen that the probability of finding two photons in quite different directions becomes more favoured.

Annalen der Physik•Jan 1, 1983•21 citations

Impact of Spontaneous Emission on the form and Dynamics of Atomic Wave Packets in an Optical Lattice

Sergey V. Prants, Leonid E. Kon’kov

Journal of Russian Laser Research•May 1, 2015•1 citation
Utilizing a recently found solution to the problem of a spontaneously radiating atom with an extended center-of-mass wave function [K. Rza\ifmmode \mbox{\c{}}\else \c{}\fi{}\ifmmode \dot{z}\else \.{z}\fi{}ewski and W. \ifmmode \dot{Z}\else \.{Z}\fi{}akowicz, J. Phys. B 25, L319 (1992)] it is shown, for nonrelativistic atomic velocities, that the field density matrix is a statistical mixture of parts corresponding to emission from different positions within the wave packet. \textcopyright{} 1996 The American Physical Society.
Abstract Using Lehmberg's master equation and taking into account dipole‐dipole near‐field interaction the time‐dependent intensity pattern, intensity – and angular correlations of the cooperative spontaneous radiation from an initially fully excited system of three identical two‐level atoms are calculated. The intensity pattern developes lobes in different directions at different times in such a way that contrary to the two‐atom system the spatial distribution of the total number of the emitted photons differs from that of the single‐atom radiation pattern. In particular three atoms placed in proper distances on a straight line emit preferentially their energy along this line. At the beginning of the emission process the probability to find two photons simultaneously in the same (or geometrical equivalent) direction is always highest but in the course of time, contrary to the two‐atom case, it may well happen that the probability of finding two photons in quite different directions becomes more favoured.