Open AccessDynamic generation of robust and controlled beating signals in an asymmetric procedure of light storage and retrieval
Author(s) -
Qiyu Bao,
Jinliang Gao,
Cui-Li Cui,
Gang Wang,
Yifeng Xue,
Jin-Hui Wu
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.011832
Subject(s) - coherence (philosophical gambling strategy) , optics , physics , tripod (photography) , quantum , optical storage , coherence time , quantum optics , quantum imaging , computer science , quantum information , quantum mechanics , quantum network
We propose an efficient scheme for the robust and controlled generation of beating signals in a sample of stationary atoms driven into the tripod configuration. This scheme relies on an asymmetric procedure of light storage and retrieval where the two classical coupling fields have equal detunings in the storage stage but opposite detunings in the retrieval stage. A quantum probe field, incident upon such an atomic sample, is first transformed into two spin coherence wave-packets and then retrieved with two optical components characterized by different time-dependent phases. Therefore the retrieved quantum probe field exhibits a series of maxima and minima (beating signals) in intensity due to the alternative constructive and destructive interference. This interesting phenomenon involves in fact the coherent manipulation of two dark-state polaritons and may be explored to achieve the fast quantum limited measurement.