Open AccessEffects of detuning on the storage of a light pulse in an ultracold atomic medium
Author(s) -
Huang Shan-Guo,
Gu Wan-Yi,
Haiqiang Ma
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.4211
Subject(s) - physics , ultracold atom , pulse (music) , atomic physics , electromagnetically induced transparency , signal (programming language) , field (mathematics) , optics , quantum mechanics , quantum , detector , mathematics , computer science , pure mathematics , programming language
Theoretical analysis and a full numerical simulation of the electromagnet ically induced transparency model are performed under detuning conditions for a closed three_level ultracold atomic system in which a signal field can be stored and retrieved. Numerical results confirm the theory that the system can be prep ared in dark states only under resonant conditions between the fields and the a tomic transitions. The signal field is partially stored in the ultracold atomic medium with the increase of detuning and an enhanced negative group velocity of t he physically vanishing signal pulse appears. In the case of a symmetrical detun ing (red or blue detuning), no remarkable changes of the storage process occur.