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

Frontiers in Optics

Multi-Spectral Raman Gain in Atomic Rubidium Vapor

Joseph E. Vornehm, G. S. Pati, K. Salit, M. S. Shahriar

Published Jan 1, 2006• 0 citations
Publisher

Abstract

Optically off-resonant stimulated Raman scattering of 85Rb is studied experimentally to implement a scheme that eliminates the key sources of fidelity loss in macroscopic entanglement and quantum information storage using atomic vapor or trapped atoms.
DOI
10.1364/ls.2006.lwa3

Related papers

Spectral characteristics of stimulated Raman scattering in rubidium vapors when excited near the 5 2 S 1/2 -5 2 P 1/2, 3/2 transitions

N. V. Znamenskiı̆, В. А. Михайлов, Vladimir I. Odintsov

OptSp•Dec 1, 1980•0 citations

Resonant stimulated Raman scattering in the infrared in rubidium vapor

F. A. Korolev, Vladimir I. Odintsov, A. O. Fakhmi

Optics and Spectroscopy•Mar 1, 1976•0 citations

Enhanced third-order nonlinear processes based on Raman resonance

Li-Ya Pei

We observe experimentally huge enhanced four-wave mixing based on Raman resonance in an 85Rb atomic vapor system. With the decrease of coupling field power or the increase of experimental temperature, the signal tends to be narrowed down in linewidth, and be basically the same spectrum as the stimulated Raman spectroscopy. It is found that the macroscopic polarization interference effect plays a crucial role in determining the nonlinear spectra. Further more, in the Doppler-broadened Λ-type energy level system, there is a strong relationship among electromagnetically induced transparency, four-wave mixing and stimulated Raman spectroscopy. The sharp transparent window in electromagnetically induced transparency can be interpreted as the suppression of Raman gain on the linear absorption of the probe field. However, the four-wave mixing signal is a new field generated by the atomic vapor system, and it comes from the Raman gain which is affected and modified by the absorption and dispersion of the nonlinear optical medium. It shows that in a Λ-type Doppler-broadened system, in essence, both the electromagnetically induced transparency and enhanced four-wave mixing stem from stimulated Raman scattering based on the third-order nonlinear processes, just the spectra of which are from different ways and objects of detection.

Acta Physica Sinica•Jan 1, 2020•1 citation

Stimulated Raman spectrum and optical pumping in a Λ-type Rb vapor system

Li-Ya Pei, Ruquan Wang, Zuo Zhan-Chun +2 more

Theoretical and experimental studies of stimulated Raman spectrum with the D1 line of an 85Rb atomic vapor system are performed. In this Λ-type system, we discover that the influence of the pump on the probe field includes two parts: stimulated Raman excitation and optical pumping. Depending on the pump frequency detuning and field intensity conditions, the Raman spectrum can display either gain or loss. When the optically pumped absorption spectrum is taken as background, either a narrow transparent window or an absorption doublet with widely different linewidths appears. Our theoretical analysis agrees well with our experimental observations. Based on these studies, we present an interpretation from a new viewpoint of the physics of electromagnetically induced transparency (with on-resonance pumping) and Autler-Townes splitting (with far off-resonance pumping) in a Λ-type level atomic system, giving the relationship between these two important phenomena and the Raman spectrum.

Acta Physica Sinica•Jan 1, 2013•6 citations

Toward Manipulating Quantum Information with Atomic Ensembles

Mikhail D. Lukin, Axel André, Matthew D. Eisaman +5 more

We review several ideas for manipulation of quantum information using atomic ensembles and photons and describe some preliminary experiments toward their implementation. In particular, we review a technique that allows for robust transfer of quantum states between light fields and metastable states of matter. Next we discuss the use of Raman scattering to produce robust entanglement of atomic ensembles via realistic (i.e., absorbing) channels. Finally, we present preliminary experimental results related to the implementation of entanglement via Raman scattering. Specifically, we present experimental studies of the intensity fluctuations in resonantly enhanced Raman scattering from a warm 85Rb vapor cell under conditions of EIT. A crossover between the Bose-Einstein and Poisson statistics of Raman light is observed and it is shown that the noise properties of Raman fields can be mirrored in transmitted pump beams.

International Conference on Atomic Physics (ICAP)•Apr 1, 2003•0 citations

Noise Suppression via Atomic Absorption in a Raman Quantum Memory

T. M. Hird, Sarah E. Thomas, J. H. D. Munns +5 more

We demonstrate strong suppression of noise on the output of a Raman quantum memory.

Quantum Information and Measurement (QIM)•Jan 1, 2019•0 citations
We observe experimentally huge enhanced four-wave mixing based on Raman resonance in an 85Rb atomic vapor system. With the decrease of coupling field power or the increase of experimental temperature, the signal tends to be narrowed down in linewidth, and be basically the same spectrum as the stimulated Raman spectroscopy. It is found that the macroscopic polarization interference effect plays a crucial role in determining the nonlinear spectra. Further more, in the Doppler-broadened Λ-type energy level system, there is a strong relationship among electromagnetically induced transparency, four-wave mixing and stimulated Raman spectroscopy. The sharp transparent window in electromagnetically induced transparency can be interpreted as the suppression of Raman gain on the linear absorption of the probe field. However, the four-wave mixing signal is a new field generated by the atomic vapor system, and it comes from the Raman gain which is affected and modified by the absorption and dispersion of the nonlinear optical medium. It shows that in a Λ-type Doppler-broadened system, in essence, both the electromagnetically induced transparency and enhanced four-wave mixing stem from stimulated Raman scattering based on the third-order nonlinear processes, just the spectra of which are from different ways and objects of detection.
Theoretical and experimental studies of stimulated Raman spectrum with the D1 line of an 85Rb atomic vapor system are performed. In this Λ-type system, we discover that the influence of the pump on the probe field includes two parts: stimulated Raman excitation and optical pumping. Depending on the pump frequency detuning and field intensity conditions, the Raman spectrum can display either gain or loss. When the optically pumped absorption spectrum is taken as background, either a narrow transparent window or an absorption doublet with widely different linewidths appears. Our theoretical analysis agrees well with our experimental observations. Based on these studies, we present an interpretation from a new viewpoint of the physics of electromagnetically induced transparency (with on-resonance pumping) and Autler-Townes splitting (with far off-resonance pumping) in a Λ-type level atomic system, giving the relationship between these two important phenomena and the Raman spectrum.
We review several ideas for manipulation of quantum information using atomic ensembles and photons and describe some preliminary experiments toward their implementation. In particular, we review a technique that allows for robust transfer of quantum states between light fields and metastable states of matter. Next we discuss the use of Raman scattering to produce robust entanglement of atomic ensembles via realistic (i.e., absorbing) channels. Finally, we present preliminary experimental results related to the implementation of entanglement via Raman scattering. Specifically, we present experimental studies of the intensity fluctuations in resonantly enhanced Raman scattering from a warm 85Rb vapor cell under conditions of EIT. A crossover between the Bose-Einstein and Poisson statistics of Raman light is observed and it is shown that the noise properties of Raman fields can be mirrored in transmitted pump beams.