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 Modern Optics

Resonance fluorescence in a squeezed thermal vacuum

Ho Trung Dung, Nguyễn Quốc Khánh

Published Aug 1, 1997• 7 citations
Publisher

Abstract

Atom radiation in a squeezed thermal reservoir is studied. We show that, as in the case of a squeezed vacuum reservoir, the two quadratures of the atomic polarization are damped at different rates. When the atom is driven by a coherent field, we find that the steady-state polarization depends on the relative phase of the squeezing and the driving field. However, this phase dependence becomes less pronounced when the number of thermal photons increases. The fluorescent spectrum is calculated in the strong-driving-field limit by employing the secular approximation. Properties of the spectrum and the possibility of a subnatural linewidth are investigated.

DOI
10.1080/09500349708230753

Related papers

Resonance Fluorescence in a Squeezed Vacuum

H. J. Carmichael, Alistair S. Lane, Daniel F. Walls

Fluorescence from a coherently driven two-level atom that is damped by a squeezed vacuum is studied. We show that the mean atomic polarization depends on the relative phases of the squeezed vacuum and the coherent driving field. The fluorescent spectrum is calculated and shows several modifications over the spectrum for normal resonance fluorescence. In particular, the central peak of the Mollow triplet has a linewidth that depends on the phase of the driving field. For strong squeezing this peak can either be much narrower or much broader than the natural linewidth of the atom.

Journal of Modern Optics•Jun 1, 1987•156 citations

Resonance fluorescence from an atom in a squeezed vacuum

H. J. Carmichael, Alistair S. Lane, Daniel F. Walls

The fluorescent spectrum for a two-level atom which is damped by a squeezed vacuum shows striking differences from the spectrum for ordinary resonance fluorescence. For strong coherent driving fields the Mollow triplet depends on the relative phase of the driving field and the squeezed vacuum field. The central peak may have either subnatural linewidth or supernatural linewidth depending on this phase. The mean atomic polarization also shows a phase sensitivity.

Physical Review Letters•Jun 15, 1987•283 citations

Collective resonance fluorescence in a squeezed vacuum

Tran Quang, M. Kozierowski, L. H. Lan

The resonance fluorescence of a small sample of N two-level atoms driven by a strong resonant coherent field and damped by a squeezed vacuum is examined. The steady-state spectrum is shown to be dramatically dependent on the relative phase of the pumping field and on the squeezed-vacuum field in both the strong- and weak-squeezing limits.

Physical Review A•Jan 1, 1989•22 citations

STEADY-STATE RESONANCE FLUORESCENCE FROM A THREE-LEVEL ATOM IN A SQUEEZED VACUUM

Guojian Yang, HUANG ZU-QIA, Gang Xiang Hu +1 more

Steady-state resonance fluorescence spectrum from a three-level atom driven coherently by two intense optical fields and damped by a squeezed vacuum is obtained, which shows the dependence of the spectrum strongly on the squeezing of the vacuum field and the phase difference between the squeezed component of the vacuum field and the driven fields.

Acta Physica Sinica•Jan 1, 1991•1 citation

Squeezing in resonance fluorescence via vacuum induced coherences

H. B. Crispin, R Arun

Abstract The squeezing spectrum of the fluorescence field emitted from a four-level atom in J = 1/2 to J = 1/2 configuration driven by two coherent fields is studied. We find that the squeezing properties of the fluorescence radiation are significantly influenced by the presence of vacuum-induced coherence in the atomic system. It is shown that such coherence induces spectral squeezing in phase quadratures of the fluorescence light for both weak and strong driving fields. The dependence of the squeezing spectrum on the relative phase of the driving fields is also investigated. Effects such as enhancement or suppression of the squeezing peaks are shown in the spectrum as the relative phase is varied. An analytical explanation of the numerical findings is presented using dressed-states of the atom-field system.

arXiv:1912.05420•Journal of Physics B Atomic Molecular and Optical Physics•Nov 27, 2019•6 citations

Resonance fluorescence with squeezed-light excitation

Reeta Vyas, Surendra Singh

Resonance fluorescence from a single two-level atom driven by a beam of squeezed light is studied in the weak-field limit. We consider the situation where the atom is coupled to the ordinary vacuum and only a few field modes corresponding to the driving field are squeezed. The field produced by the degenerate optical parametric oscillator is used as the driving field. Heisenberg equations of motion are solved in the steady-state and analytic expressions for the fluorescent-light intensity and the spectrum of fluorescent light are derived. We also consider photon statistics of fluorescent light. In particular, squeezing, antibunching, and sub-Poissonian statistics of fluorescent photons are discussed, and analytic expressions for the quadrature variance and the two-time intensity correlation function are presented. Contrary to the case of coherent excitation, the second-order intensity correlation function does not factorize. This and other differences are discussed, and curves are presented to illustrate the behavior of various quantities. We also present results for thermal excitation of the atom.

Physical Review A•Jun 1, 1992•33 citations
Atom radiation in a squeezed thermal reservoir is studied. We show that, as in the case of a squeezed vacuum reservoir, the two quadratures of the atomic polarization are damped at different rates. When the atom is driven by a coherent field, we find that the steady-state polarization depends on the relative phase of the squeezing and the driving field. However, this phase dependence becomes less pronounced when the number of thermal photons increases. The fluorescent spectrum is calculated in the strong-driving-field limit by employing the secular approximation. Properties of the spectrum and the possibility of a subnatural linewidth are investigated.
Fluorescence from a coherently driven two-level atom that is damped by a squeezed vacuum is studied. We show that the mean atomic polarization depends on the relative phases of the squeezed vacuum and the coherent driving field. The fluorescent spectrum is calculated and shows several modifications over the spectrum for normal resonance fluorescence. In particular, the central peak of the Mollow triplet has a linewidth that depends on the phase of the driving field. For strong squeezing this peak can either be much narrower or much broader than the natural linewidth of the atom.
Abstract The squeezing spectrum of the fluorescence field emitted from a four-level atom in J = 1/2 to J = 1/2 configuration driven by two coherent fields is studied. We find that the squeezing properties of the fluorescence radiation are significantly influenced by the presence of vacuum-induced coherence in the atomic system. It is shown that such coherence induces spectral squeezing in phase quadratures of the fluorescence light for both weak and strong driving fields. The dependence of the squeezing spectrum on the relative phase of the driving fields is also investigated. Effects such as enhancement or suppression of the squeezing peaks are shown in the spectrum as the relative phase is varied. An analytical explanation of the numerical findings is presented using dressed-states of the atom-field system.
Resonance fluorescence from a single two-level atom driven by a beam of squeezed light is studied in the weak-field limit. We consider the situation where the atom is coupled to the ordinary vacuum and only a few field modes corresponding to the driving field are squeezed. The field produced by the degenerate optical parametric oscillator is used as the driving field. Heisenberg equations of motion are solved in the steady-state and analytic expressions for the fluorescent-light intensity and the spectrum of fluorescent light are derived. We also consider photon statistics of fluorescent light. In particular, squeezing, antibunching, and sub-Poissonian statistics of fluorescent photons are discussed, and analytic expressions for the quadrature variance and the two-time intensity correlation function are presented. Contrary to the case of coherent excitation, the second-order intensity correlation function does not factorize. This and other differences are discussed, and curves are presented to illustrate the behavior of various quantities. We also present results for thermal excitation of the atom.