High-speed spatially multimode atomic memory

Journal Article · Sun May 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.053810· OSTI ID:21546859

Golubeva, T; Golubev, Yu; Mishina, O; Bramati, A; Laurat, J; Giacobino, E ^[1]

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1. St. Petersburg State University, 198504 St. Petersburg, Stary Petershof, ul. Ul'yanovskaya, 1 (Russian Federation)

We study the coherent storage and retrieval of a very short multimode light pulse in an atomic ensemble. We consider a quantum memory process based on the conversion of a signal pulse into a long-lived spin coherence via light matter interaction in an on-resonant {Lambda} -type system. In order to study the writing and reading processes we analytically solve the partial differential equations describing the evolution of the field and of the atomic coherence in time as well as in space. We show how to optimize the process for writing as well as for reading. If the medium length is fixed, for each length, there is an optimal value of the pulse duration. We discuss the information capacity of this memory scheme and we estimate the number of transverse modes that can be stored as a quantum hologram.

• OSTI ID: 21546859
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR MOMENTUM
ATOMS
CONVERSION
DIFFERENTIAL EQUATIONS
ELECTROMAGNETIC RADIATION
EQUATIONS
HOLOGRAPHY
INFORMATION
INTERACTIONS
MATTER
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE PROPERTIES
PULSES
RADIATIONS
SIGNALS
SPACE DEPENDENCE
SPIN
TIME DEPENDENCE
VELOCITY
VISIBLE RADIATION