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Quantum memory process with a four-level atomic ensemble

  • X.-J. LiuEmail author
  • H. Jing
  • M.-L. Ge
Quantum Optics and Quantum Information

Abstract.

We examine in detail the quantum memory technique for photons in a double Λ atomic ensemble in this work. The novel application of the present technique to create two different quantum probe fields as well as entangled states of them is proposed. A larger zero-degeneracy class besides dark-state subspace is investigated and the adiabatic condition is confirmed in the present model. We extend the single-mode quantum memory technique to the case with multi-mode probe fields, and reveal the exact pulse matching phenomenon between two quantized pulses in the present system.

PACS.

03.67.Mn Entanglement production, characterization, and manipulation 42.50.Gy Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption 03.65.Fd Algebraic methods 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  1. 1.Department of PhysicsNational University of SingaporeSingaporeP.R. China
  2. 2.Theoretical Physics DivisionNankai Institute of Mathematics, Nankai UniversityTianjinP.R. China
  3. 3.Liuhui Center for Applied Mathematics, Nankai University and Tianjin UniversityTianjinP.R. China
  4. 4.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and MathematicsWuhanP.R. China

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