Observation of ultra-narrow electromagnetically induced transparency and slow light using purely electronic spins in a hot atomic vapor
Fabienne Goldfarb,Joyee Ghosh,Joyee Ghosh,M. David,J. Ruggiero,Thierry Chanelière,J.-L. Le Gouët,H. Gilles,Rupamanjari Ghosh,Fabien Bretenaker +9 more
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In this article, the EIT windows were obtained for purely electronic spins in the presence of Doppler broadening and the positive role of collisions was emphasized through measurements of the power dependence of EIT resonance.Abstract:
Electromagnetically induced transparency (EIT) is observed in gaseous 4He at room temperature. Ultra-narrow (less than 10 kHz) EIT windows are obtained for the first time for purely electronic spins in the presence of Doppler broadening. The positive role of collisions is emphasized through measurements of the power dependence of the EIT resonance. The measurement of slow light opens up possible ways to applications.read more
Citations
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Journal ArticleDOI
Colloquium: Coherent diffusion of polaritons in atomic media
TL;DR: In this paper, the effect of coherent diffusion on key Raman processes, namely, Raman spectroscopy, slow polariton propagation, and stored light, are reviewed in this Colloquium.
Journal ArticleDOI
Photon lifetime in a cavity containing a slow-light medium.
T. Lauprêtre,C. Proux,Rupamanjari Ghosh,Sylvain Schwartz,Fabienne Goldfarb,Fabien Bretenaker +5 more
TL;DR: In this paper, the authors investigated the lifetime of the photons in a cavity containing a medium exhibiting strong positive dispersion, provided by a metastable helium gas at room temperature in the electromagnetically induced transparency regime.
Journal ArticleDOI
Photon lifetime in a cavity containing a slow-light medium
T. Lauprêtre,C. Proux,Rupamanjari Ghosh,Sylvain Schwartz,Fabienne Goldfarb,Fabien Bretenaker +5 more
TL;DR: The results definitely prove that the lifetime of the cavity photons is governed by the group velocity of light in the cavity and not its phase velocity.
Journal ArticleDOI
Coherent Population Oscillation-Based Light Storage.
P. Neveu,M.-A. Maynard,R. Bouchez,Jasleen Lugani,Rupamanjari Ghosh,Fabien Bretenaker,Fabienne Goldfarb,Etienne Brion +7 more
TL;DR: In this article, the authors theoretically studied the propagation and storage of a classical field in a Λ-type atomic medium using coherent population oscillations (CPO) and showed that the propagation eigenmodes strongly relate to the different CPO modes of the system.
Journal ArticleDOI
Electromagnetically-induced transparency, slow light, and negative group velocities in a room temperature vapor of 4He∗
TL;DR: Goldfarb et al. as discussed by the authors showed that it is possible to use optically detuned resonances (Fano-like profiles) to see a transition from slow light to negative group velocity.
References
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TL;DR: It is demonstrated that stimulated Brillouin scattering can be used to generate all-optical slow-light pulse delays of greater than a pulse length for pulses as short as 16 ns in a single-mode fiber, and strongly suggest that analogous delays can be achieved using stimulated Raman scattering at telecommunication data rates.
Journal ArticleDOI
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TL;DR: Low group velocities of light in an optically dense crystal of Pr doped Y2SiO5 are reported by using a sharp spectral feature in absorption and dispersion that is produced by resonance Raman excitation of a ground-state spin coherence.
Journal ArticleDOI
Electromagnetically induced transparency: Propagation dynamics.
TL;DR: 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.