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
TLDR
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. 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: 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
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.
Journal ArticleDOI
Interacting double dark resonances in a hot atomic vapor of helium
TL;DR: In this paper, the authors experimentally and theoretically study two different tripod configurations using metastable helium, with the probe field polarization perpendicular and parallel to the quantization axis, defined by an applied weak magnetic field, and observe destructive interference between the two dark resonances inducing an extra absorption peak at the line center.
Dissertation
Propagation de lumière dans l'hélium métastable : stockage, amplification, fluctuations et bruit quantique.
TL;DR: In this article, the propagation of quantique de lumiere is investigated in the presence of coherentness coherentes of populations ultrafines and montre qu'elles permettent de stocker efficacement a quadrature specifique d'un champ lumineux.
References
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Journal ArticleDOI
Observation and measurement of an extra phase shift created by optically detuned light storage in metastable helium
M.-A. Maynard,Tarek Labidi,Musawwadah Mukhtar,Santosh Kumar,Rupamanjari Ghosh,Rupamanjari Ghosh,Fabien Bretenaker,Fabienne Goldfarb +7 more
TL;DR: In this article, an additional phase shift is imposed to the retrieved pulse of light when the EIT protocol is performed at non-zero optical detunings, and its origin is discussed.
Journal ArticleDOI
Electromagetically induced transparency with nuclear spin.
Mei-Ju Lu,Jonathan D. Weinstein +1 more
TL;DR: The observation of electromagnetically induced transparency in a sample of cryogenically cooled ground-state atomic ytterbium ((1)S(0)).
Slow-light: Fascinating physics or potential applications? Electromagnetically-induced transparency, slow light, and negative group velocities in a room temperature vapor of 4 He !
TL;DR: In this paper, the evolution of the group velocity at room temperature was studied with respect to the coupling beam intensity and to small Raman detunings, and it was shown that it is possible to use optically detuned resonances (Fano-like profiles) to see at ransition from slow light to negative group velocity.
Journal ArticleDOI
Proposal of Rydberg atomic receiver for amplitude-modulated microwave signals with active Raman gain
TL;DR: Simulation results show that the fidelity of MW communication based on the Rydberg atomic ARG scheme is improved by at least 10 times compared to that based on an electromagnetically induced transparency scheme, and the system seems more robust to amplitude modulation signals with different modulation depths.
Journal Article
Low-light-level Ladder-type Electromagnetically Induced Transparency and Two-photon Absorption
Zong-Syun He,Chin-Chun Tsai,Hong-Ren Chen,Wei Fu Chen,Jing-Yuan Su,Meng-Huang Sie,Jyun-Ya Ye +6 more
TL;DR: In this article, the EIT and two-photon absorption (TPA) under a low-light level of probe (0.2 µW/cm2(0.06Γ2)) and weak coupling power for a cesium atom at room temperature were investigated.
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