Light storage in an optically thick atomic ensemble under conditions of electromagnetically induced transparency and four-wave mixing
| Autor: | Phillips, Nathaniel B., Gorshkov, Alexey V., Novikova, Irina |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 83, 063823 (2011) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.83.063823 |
| Popis: | We study the modification of a traditional electromagnetically induced transparency (EIT) stored light technique that includes both EIT and four-wave mixing (FWM) in an ensemble of hot Rb atoms. The standard treatment of light storage involves the coherent and reversible mapping of one photonic mode onto a collective spin coherence. It has been shown that unwanted, competing processes such as four-wave mixing are enhanced by EIT and can significantly modify the signal optical pulse propagation. We present theoretical and experimental evidence to indicate that while a Stokes field is indeed detected upon retrieval of the signal field, any information originally encoded in a seeded Stokes field is not independently preserved during the storage process. We present a simple model that describes the propagation dynamics of the fields and the impact of FWM on the spin wave. Comment: 13 pages, 10 figures |
| Databáze: | arXiv |
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