Control of photon propagation via electromagnetically induced transparency in lossless media

Liang He, Yu-xi Liu, S. Yi, C. P. Sun, and Franco Nori
Phys. Rev. A 75, 063818 – Published 19 June 2007

Abstract

We study the influence of a lossless material medium on the coherent storage and quantum-state transfer of a quantized probe light in an ensemble of Λ-type atoms. The medium is modeled as uniformly distributed two-level atoms with the same energy level spacing, coupling to a probe light. This coupled system can be simplified to a collection of two-mode polaritons which couple to one transition of the Λ-type atoms. We show that, when the other transition of Λ-type atoms is controlled by a classical light, electromagnetically induced transparency can also occur for the polaritons. In this case the coherent storage and quantum transfer for photon states are achievable through novel dark states with respect to the polaritons. By calculating the corresponding dispersion relation, we find that the ensemble of three-level atoms with Λ-type transitions may serve as quantum memory for it slows or even stops light propagation through the mechanism of electromagnetically induced transparency.

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  • Received 22 March 2007

DOI:https://doi.org/10.1103/PhysRevA.75.063818

©2007 American Physical Society

Authors & Affiliations

Liang He1,2, Yu-xi Liu2,3, S. Yi1, C. P. Sun1,2, and Franco Nori2,3,4

  • 1Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 2Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama 351-0198, Japan
  • 3CREST, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
  • 4Center for Theoretical Physics, Physics Department, Center for the Study of Complex Systems, The University of Michigan, Ann Arbor, Michigan 48109-1040, USA

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Issue

Vol. 75, Iss. 6 — June 2007

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