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

International conference on fiber optics and photonics

Time-delayed Intensity-Interferometry with Light from Laser-Cooled Atoms

K. Muhammed Shafi, Deepak Pandey, Hema Ramachandran

Published Jan 1, 2014• 1 citation
Publisher

Abstract

Time-delayed intensity-interferometry employing light emitted by an ensemble of laser-cooled rubidium atoms was used to determine its temperature on timescales of microseconds, and to observe signatures of coherent population oscillations on time scales of nanoseconds.
DOI
10.1364/photonics.2014.s5a.83

Related papers

Atom Interferometry in a Warm Vapor

Grant W. Biedermann, Hayden McGuinness, Akash Rakholia +4 more

We demonstrate matter-wave interference in a warm vapor of rubidium atoms. Established approaches to light-pulse atom interferometry rely on laser cooling to concentrate a large ensemble of atoms into a velocity class resonant with the atom optical light pulse. In our experiment, we show that clear interference signals may be obtained without laser cooling. This effect relies on the Doppler selectivity of the atom interferometer resonance. This interferometer may be configured to measure accelerations, and we demonstrate that multiple interferometers may be operated simultaneously by addressing multiple velocity classes.

arXiv:1610.02451•Physical Review Letters•Apr 17, 2017•46 citations

Atom Interferometers Warm Up

Carlos L. Garrido Alzar

We demonstrate matter-wave interference in a warm vapor of rubidium atoms.Established approaches to light-pulse atom interferometry rely on laser cooling to concentrate a large ensemble of atoms into a velocity class resonant with the atom optical light pulse.In our experiment, we show that clear interference signals may be obtained without laser cooling.This effect relies on the Doppler selectivity of the atom interferometer resonance.This interferometer may be configured to measure accelerations, and we demonstrate that multiple interferometers may be operated simultaneously by addressing multiple velocity classes.

Physics•Apr 17, 2017•1 citation

Light Amplification without Population Inversion by using Laser-Cooled Rubidium Atoms

Noritsugu Sbiokawa, Yoshio Torii, Takuya Hirano +1 more

Complete transparency via effect of quantum interference in a A-type three-level atomic system was observed by using laser-cooled rubidium atoms. We also demonstrated inversionless amplification of weak probe laser in this system.

Quantum Electronics and Laser Science Conference•May 18, 1997•3 citations

Lattice Interferometer for Laser-Cooled Atoms

Mikkel F. Andersen, Tycho Sleator

We demonstrate an atom interferometer in which atoms are laser cooled into a 1D optical lattice, suddenly released, and later subjected to a pulsed optical lattice. For short pulses, a simple analytical theory predicts the signal. We investigate both short and longer pulses where the analytical theory fails. Longer pulses yield higher precision and larger signals, and we observe a coherent signal at times that can differ significantly from the expected echo time. The interferometer has potential for precision measurements of variant Planck's/m(A), and can probe the dynamics of atoms in an optical lattice.

arXiv:0811.3780•Physical Review Letters•Aug 11, 2009•16 citations

Time-delayed intensity-interferometry of the emission from ultracold atoms in a steady-state magneto-optical trap

Muhammed Shafi K., Deepak Pandey, Buti Suryabrahmam +2 more

An accurate measurement of the bunching of photons in the fluorescent emission from an ultracold ensemble of thermal 87Rb atoms in a steady-state magneto-optical trap is presented. Time-delayed-intensity-interferometry (TDII) performed with a 5-nanosecond time resolution yielded a second-order intensity correlation function that has the ideal value of 2 at zero delay, and that shows coherent Rabi oscillations of upto 5 full periods - much longer than the spontaneous emission lifetime of the excited state of Rb. The oscillations are damped out by ~150ns, and thereafter, as expected from a thermal source, an exponential decay is observed, enabling the determination of the temperature of the atomic ensemble. Values so obtained compare well with those determined by standard techniques. TDII thus enables a quantitative study of the coherent and incoherent dynamics, even of a large thermal ensemble of atomic emitters.

arXiv:1502.06203•Feb 22, 2015•0 citations

Laser optical system of a rubidium cold-atom interferometer

G. V. Osipenko, M. S. Aleynikov, Julia V. Pashkova +1 more

Measurement Techniques•May 1, 2025•1 citation
We demonstrate matter-wave interference in a warm vapor of rubidium atoms. Established approaches to light-pulse atom interferometry rely on laser cooling to concentrate a large ensemble of atoms into a velocity class resonant with the atom optical light pulse. In our experiment, we show that clear interference signals may be obtained without laser cooling. This effect relies on the Doppler selectivity of the atom interferometer resonance. This interferometer may be configured to measure accelerations, and we demonstrate that multiple interferometers may be operated simultaneously by addressing multiple velocity classes.
We demonstrate matter-wave interference in a warm vapor of rubidium atoms.Established approaches to light-pulse atom interferometry rely on laser cooling to concentrate a large ensemble of atoms into a velocity class resonant with the atom optical light pulse.In our experiment, we show that clear interference signals may be obtained without laser cooling.This effect relies on the Doppler selectivity of the atom interferometer resonance.This interferometer may be configured to measure accelerations, and we demonstrate that multiple interferometers may be operated simultaneously by addressing multiple velocity classes.
We demonstrate an atom interferometer in which atoms are laser cooled into a 1D optical lattice, suddenly released, and later subjected to a pulsed optical lattice. For short pulses, a simple analytical theory predicts the signal. We investigate both short and longer pulses where the analytical theory fails. Longer pulses yield higher precision and larger signals, and we observe a coherent signal at times that can differ significantly from the expected echo time. The interferometer has potential for precision measurements of variant Planck's/m(A), and can probe the dynamics of atoms in an optical lattice.
An accurate measurement of the bunching of photons in the fluorescent emission from an ultracold ensemble of thermal 87Rb atoms in a steady-state magneto-optical trap is presented. Time-delayed-intensity-interferometry (TDII) performed with a 5-nanosecond time resolution yielded a second-order intensity correlation function that has the ideal value of 2 at zero delay, and that shows coherent Rabi oscillations of upto 5 full periods - much longer than the spontaneous emission lifetime of the excited state of Rb. The oscillations are damped out by ~150ns, and thereafter, as expected from a thermal source, an exponential decay is observed, enabling the determination of the temperature of the atomic ensemble. Values so obtained compare well with those determined by standard techniques. TDII thus enables a quantitative study of the coherent and incoherent dynamics, even of a large thermal ensemble of atomic emitters.