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

arXiv:0810.2918 · Physical Review A

Spectroscopy of superradiant scattering from an array of Bose-Einstein condensates

Xu Xu, Xiaoji Zhou, Xuzong Chen

Published Mar 5, 2009• 8 citations
arXivHTMLPDF

Abstract

We theoretically study the superradiant gain and the direction of this coherent radiant for an array of Bose-Einstein condensates in an optical lattice. We find that the density grating is formed to amplify the scattering light with the phase-matching condition. The scattering spectroscopy in the momentum space can provide a method to measure the overlap of wave functions of neighboring sites, which is related to the inner-site and intersite coherences.

DOI
10.1103/physreva.79.033605

Related papers

When coherent light interacts with coherent atoms-optical properties of Bose-Einstein condensates

Wolfgang Ketterle

Summary form only given. Bose-Einstein condensed atomic gases are a new class of quantum fluids with many novel properties. We have studied collective modes and dissipation by perturbing the condensate with focused laser beams. The scattering of photons imparts momentum to the condensate and creates excitations. Consequently, the coherence and collective behavior of the condensate can strongly affect optical properties. We used light scattering to demonstrate that the coherence length of a condensate is equal to its physical size, and obtained dramatic evidence for the presence of correlated momentum excitations in the many-body condensate wavefunction. At higher laser intensity, a new form of superradiance was found which provided a gain mechanism for the generation of directed beams of atoms and light. This process amplified matter waves in a phase coherent way.

Quantum Electronics and Laser Science Conference•May 7, 2000•0 citations

Cooperative scattering measurement of coherence in a spatially modulated Bose gas

Bo Lü, Thibault Vogt, Xinxing Liu +3 more

Correlations of a Bose gas released from an optical lattice are measured using superradiant scattering. Conditions are chosen so that, after initial incident light pumping at the Bragg angle for diffraction, superradiant scattering into the Bragg diffracted mode is preponderant due to matter-wave amplification and mode competition. A temporal analysis of the superradiant scattering gain reveals periodical oscillations and damping due to the initial lack of coherence between lattice sites. Such damping is used for characterizing first-order spatial correlations in our system with a precision of one lattice period.

arXiv:1105.1425•Physical Review A•May 31, 2011•4 citations

Super-radiant scattering of laser light from a Bose-Einstein condensate of atomic gas: control of the matter-field waves generation

Yuri A. Avetisyan

The solution of Maxwell-Schrödinger equations describing superradiant scattering of light from a Bose-Einstein condensate of dilute atomic gas is analyzed. A novel method of control the generation of recoil atomic ‘clouds’ and scattered fields by inclined illumination of a Bose-Einstein condensate sample is proposed.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Feb 26, 2013•0 citations

Expansion of a Coherent Array of Bose-Einstein Condensates

P. Pedri, Лев П. Питаевский, S. Stringari +6 more

We investigate the properties of a coherent array containing about 200 Bose-Einstein condensates produced in a far detuned 1D optical lattice. The density profile of the gas, imaged after releasing the trap, provides information about the coherence of the ground-state wave function. The measured atomic distribution is characterized by interference peaks. The time evolution of the peaks, their relative population, as well as the radial size of the expanding cloud are in good agreement with the predictions of theory. The 2D nature of the trapped condensates and the conditions required to observe the effects of coherence are also discussed.

arXiv:cond-mat/0108004•Physical Review Letters•Nov 12, 2001•193 citations

Photon echo in the super-radiant light scattering from a Bose-Einstein condensate

N. Piovella, V. Beretta, Gordon R. M. Robb +1 more

Super-radiant Rayleigh scattering from a Bose-Einstein condensate, driven by a single far-detuned laser beam, is strongly limited by dephasing due to inhomogeneous broadening. We demonstrate that the dephasing can be reversed applying a Bragg pulse of area $\ensuremath{\pi}$ after the first superradiant scattering, stimulating a superradiant echo and inducing a further transfer of atoms from the initial condensate to a condensate with relative momentum $2\ensuremath{\Elzxh}k$ in the direction of the laser.

arXiv:cond-mat/0309349•Physical Review A•Aug 11, 2003•14 citations

Superradiant Rayleigh Scattering from a Bose-Einstein Condensate

S. Inouye, A. P. Chikkatur, Dan Stamper-Kurn +3 more

Rayleigh scattering off a Bose-Einstein condensate was studied. Exposing an elongated condensate to a single off-resonant laser beam resulted in the observation of highly directional scattering of light and atoms. This collective light scattering is caused by the coherent center-of-mass motion of the atoms in the condensate. A directional beam of recoiling atoms was built up by matter wave amplification.

Science•Jul 23, 1999•538 citations
We theoretically study the superradiant gain and the direction of this coherent radiant for an array of Bose-Einstein condensates in an optical lattice. We find that the density grating is formed to amplify the scattering light with the phase-matching condition. The scattering spectroscopy in the momentum space can provide a method to measure the overlap of wave functions of neighboring sites, which is related to the inner-site and intersite coherences.
Summary form only given. Bose-Einstein condensed atomic gases are a new class of quantum fluids with many novel properties. We have studied collective modes and dissipation by perturbing the condensate with focused laser beams. The scattering of photons imparts momentum to the condensate and creates excitations. Consequently, the coherence and collective behavior of the condensate can strongly affect optical properties. We used light scattering to demonstrate that the coherence length of a condensate is equal to its physical size, and obtained dramatic evidence for the presence of correlated momentum excitations in the many-body condensate wavefunction. At higher laser intensity, a new form of superradiance was found which provided a gain mechanism for the generation of directed beams of atoms and light. This process amplified matter waves in a phase coherent way.
Correlations of a Bose gas released from an optical lattice are measured using superradiant scattering. Conditions are chosen so that, after initial incident light pumping at the Bragg angle for diffraction, superradiant scattering into the Bragg diffracted mode is preponderant due to matter-wave amplification and mode competition. A temporal analysis of the superradiant scattering gain reveals periodical oscillations and damping due to the initial lack of coherence between lattice sites. Such damping is used for characterizing first-order spatial correlations in our system with a precision of one lattice period.
We investigate the properties of a coherent array containing about 200 Bose-Einstein condensates produced in a far detuned 1D optical lattice. The density profile of the gas, imaged after releasing the trap, provides information about the coherence of the ground-state wave function. The measured atomic distribution is characterized by interference peaks. The time evolution of the peaks, their relative population, as well as the radial size of the expanding cloud are in good agreement with the predictions of theory. The 2D nature of the trapped condensates and the conditions required to observe the effects of coherence are also discussed.
Super-radiant Rayleigh scattering from a Bose-Einstein condensate, driven by a single far-detuned laser beam, is strongly limited by dephasing due to inhomogeneous broadening. We demonstrate that the dephasing can be reversed applying a Bragg pulse of area $\ensuremath{\pi}$ after the first superradiant scattering, stimulating a superradiant echo and inducing a further transfer of atoms from the initial condensate to a condensate with relative momentum $2\ensuremath{\Elzxh}k$ in the direction of the laser.