Observation of coherent optical information storage in an atomic medium using halted light pulses

  title={Observation of coherent optical information storage in an atomic medium using halted light pulses},
  author={Chien Liu and Zachary Dutton and Cyrus H Behroozi and Lene Vestergaard Hau},
Electromagnetically induced transparency is a quantum interference effect that permits the propagation of light through an otherwise opaque atomic medium; a ‘coupling’ laser is used to create the interference necessary to allow the transmission of resonant pulses from a ‘probe’ laser. This technique has been used to slow and spatially compress light pulses by seven orders of magnitude, resulting in their complete localization and containment within an atomic cloud. Here we use… 
Coherent control of optical information with matter wave dynamics
It is demonstrated that a slow light pulse can be stopped and stored in one Bose–Einstein condensates and subsequently revived from a totally different condensate, 160 μm away; information is transferred through conversion of the optical pulse into a travelling matter wave.
Stationary pulses of light in an atomic medium
This work describes and experimentally demonstrate a technique in which light propagating in a medium of Rb atoms is converted into an excitation with localized, stationary electromagnetic energy, which can be held and released after a controllable interval, offering new possibilities for photon state manipulation and nonlinear optical processes at low light levels.
Electromagnetically induced transparency with resonant nuclei in a cavity
Electromagnetically induced transparency in the regime of hard X-rays is demonstrated, using the 14.4-kiloelectronvolt nuclear resonance of the Mössbauer isotope iron-57 (a two-level system), to establish the field of nuclear quantum optics.
Propagation and storing of light in optically modified atomic media
Coherent interactions of laser light with atomic ensembles allow one to modify dispersive properties of a medium and lead to new optical phenomena. Studies of the controlled light propagation and
Electromagnetically induced transparency with tunable single-photon pulses
This work demonstrates the use of EIT for the controllable generation, transmission and storage of single photons with tunable frequency, timing and bandwidth and probes the spectral and quantum statistical properties of narrow-bandwidth single-photon pulses, revealing that their quantum nature is preserved under EIT propagation and storage.
Electromagnetically induced transparency and nonlinear pulse propagation in a combined tripod and Λ atom-light coupling scheme
We consider propagation of a probe pulse in an atomic medium characterized by a combined tripod and Lambda ($\Lambda$) atom-light coupling scheme. The scheme involves three atomic ground states
Slow Light, Stopped Light and Guided Light in Hot Rubidium Vapor Using Off-resonant Interactions
This thesis presents the applications of some of the coherent processes in a three-level atomic system, to control spatial and temporal properties of a signal pulse. We use two Raman absorption
Electromagnetically induced transparency : Optics in coherent media
Coherent preparation by laser light of quantum states of atoms and molecules can lead to quantum interference in the amplitudes of optical transitions. In this way the optical properties of a medium
Four-wave-mixing stopped light in hot atomic rubidium vapour
Digital signal processing, holography, and quantum and classical information processing rely heavily upon recording the amplitude and phase of coherent optical signals. One method for achieving
Optical vortices of slow light using a tripod scheme
We consider propagation, storing and retrieval of slow light (probe beam) in a resonant atomic medium illuminated by two control laser beams of larger intensity. The probe and two control beams act


Light speed reduction to 17 metres per second in an ultracold atomic gas
Techniques that use quantum interference effects are being actively investigated to manipulate the optical properties of quantum systems. One such example is electromagnetically induced transparency,
Electromagnetically induced transparency: Propagation dynamics.
The first experimental studies of the temporal dynamics and spatial behavior of propagating EIT pulses are reported, including the observation of nearly diffractionlimited beam transmission in a medium which, without the coupling laser present, is nearly optically impenetrable.
Electromagnetically Induced Transparency
  • S. Harris
  • Physics
    QELS '97., Summaries of Papers Presented at the Quantum Electronics and Laser Science Conference
  • 1997
Electromagnetically induced transparency (EIT) is a technique for making an otherwise optically-thick medium transparent to laser radiation.’ The basic idea is to use two lasers or electromagnetic
The dynamics of resonant light propagation in rubidium vapor in a cell with antirelaxation wall coating are investigated. We change the polarization of the input light and measure the time dependence
Near-Resonant Spatial Images of Confined Bose-Einstein Condensates in a 4-Dee Magnetic Bottle
We present quantitative measurements of the spatial density profile of Bose-Einstein condensates of sodium atoms confined in a 4-Dee magnetic bottle. The condensates are imaged in transmission with
Propagation of laser pulses and coherent population transfer in dissipative three-level systems: An adiabatic dressed-state picture.
It is shown that under quasiadiabatic conditions and in the presence of decay from the upper level this coupling can be treated perturbatively and the Maxwell-Bloch equations can be solved analytically.
Dark-state polaritons in electromagnetically induced transparency
This work identifies form-stable coupled excitations of light and matter ("dark-state polaritons") associated with the propagation of quantum fields in electromagnetically induced transparency that can be controlled by an external coherent field as the pulse propagates.
We report the observation of small group velocities of order 90 m/s and large group delays of greater than 0.26 ms, in an optically dense hot rubidium gas ( $\ensuremath{\approx}360\mathrm{K}$).
Dispersive properties of electromagnetically induced transparency.
  • Harris, Field, Kasapi
  • Physics
    Physical review. A, Atomic, molecular, and optical physics
  • 1992
An atomic transition that has been made transparent by applying an additional electromagnetic field exhibits a rapidly varying refractive index with zero group velocity dispersion at line center. A
The Physical Implementation of Quantum Computation
After a brief introduction to the principles and promise of quantum information processing, the requirements for the physical implementation of quantum computation are discussed. These five