Quantum memory for light via a stimulated off-resonant Raman process: Beyond the three-level {Lambda}-scheme approximation
We consider a quantum memory scheme based on the conversion of a signal pulse into a long-lived spin coherence via stimulated off-resonant Raman process. For a storing medium consisting of alkali-metal atoms, we have calculated the Autler-Townes resonance structure created by a strong control field....
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| Veröffentlicht in: | Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2010-09, Vol.82 (3) |
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| container_title | Physical review. A, Atomic, molecular, and optical physics |
| container_volume | 82 |
| creator | Sheremet, A. S. Gerasimov, L. V. Sokolov, I. M. Kupriyanov, D. V. Mishina, O. S. Giacobino, E. Laurat, J. Laboratoire Kastler Brossel, Universite Pierre et Marie Curie, Ecole Normale Superieure, CNRS, Case 74, 4 place Jussieu, F-75252 Paris, Cedex 05 |
| description | We consider a quantum memory scheme based on the conversion of a signal pulse into a long-lived spin coherence via stimulated off-resonant Raman process. For a storing medium consisting of alkali-metal atoms, we have calculated the Autler-Townes resonance structure created by a strong control field. By taking into account the upper hyperfine states of the D{sub 1} optical transition, we show important deviations from the predictions of the usual three-level {Lambda}-scheme approximation and we demonstrate an enhancement of the process for particular detunings of the control. We estimate the memory efficiency one can obtain using this configuration. |
| doi_str_mv | 10.1103/PHYSREVA.82.033838 |
| format | Article |
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V. ; Sokolov, I. M. ; Kupriyanov, D. V. ; Mishina, O. S. ; Giacobino, E. ; Laurat, J. ; Laboratoire Kastler Brossel, Universite Pierre et Marie Curie, Ecole Normale Superieure, CNRS, Case 74, 4 place Jussieu, F-75252 Paris, Cedex 05</creator><creatorcontrib>Sheremet, A. S. ; Gerasimov, L. V. ; Sokolov, I. M. ; Kupriyanov, D. V. ; Mishina, O. S. ; Giacobino, E. ; Laurat, J. ; Laboratoire Kastler Brossel, Universite Pierre et Marie Curie, Ecole Normale Superieure, CNRS, Case 74, 4 place Jussieu, F-75252 Paris, Cedex 05</creatorcontrib><description>We consider a quantum memory scheme based on the conversion of a signal pulse into a long-lived spin coherence via stimulated off-resonant Raman process. For a storing medium consisting of alkali-metal atoms, we have calculated the Autler-Townes resonance structure created by a strong control field. By taking into account the upper hyperfine states of the D{sub 1} optical transition, we show important deviations from the predictions of the usual three-level {Lambda}-scheme approximation and we demonstrate an enhancement of the process for particular detunings of the control. 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By taking into account the upper hyperfine states of the D{sub 1} optical transition, we show important deviations from the predictions of the usual three-level {Lambda}-scheme approximation and we demonstrate an enhancement of the process for particular detunings of the control. 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S.</au><au>Giacobino, E.</au><au>Laurat, J.</au><au>Laboratoire Kastler Brossel, Universite Pierre et Marie Curie, Ecole Normale Superieure, CNRS, Case 74, 4 place Jussieu, F-75252 Paris, Cedex 05</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantum memory for light via a stimulated off-resonant Raman process: Beyond the three-level {Lambda}-scheme approximation</atitle><jtitle>Physical review. A, Atomic, molecular, and optical physics</jtitle><date>2010-09-15</date><risdate>2010</risdate><volume>82</volume><issue>3</issue><issn>1050-2947</issn><eissn>1094-1622</eissn><abstract>We consider a quantum memory scheme based on the conversion of a signal pulse into a long-lived spin coherence via stimulated off-resonant Raman process. For a storing medium consisting of alkali-metal atoms, we have calculated the Autler-Townes resonance structure created by a strong control field. By taking into account the upper hyperfine states of the D{sub 1} optical transition, we show important deviations from the predictions of the usual three-level {Lambda}-scheme approximation and we demonstrate an enhancement of the process for particular detunings of the control. We estimate the memory efficiency one can obtain using this configuration.</abstract><cop>United States</cop><doi>10.1103/PHYSREVA.82.033838</doi></addata></record> |
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| ispartof | Physical review. A, Atomic, molecular, and optical physics, 2010-09, Vol.82 (3) |
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| source | American Physical Society Journals |
| subjects | ALKALI METALS ANGULAR MOMENTUM APPROXIMATIONS ATOMIC AND MOLECULAR PHYSICS ATOMS CALCULATION METHODS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CONTROL CONVERSION ELECTROMAGNETIC RADIATION ELEMENTS ENERGY LEVELS ENERGY-LEVEL TRANSITIONS HYPERFINE STRUCTURE METALS PARTICLE PROPERTIES PULSES RADIATIONS RAMAN EFFECT RESONANCE SPIN VISIBLE RADIATION |
| title | Quantum memory for light via a stimulated off-resonant Raman process: Beyond the three-level {Lambda}-scheme approximation |
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