Open AccessEfficient images storage via modulating the atomic spin coherence in a N-type system
Author(s) -
Tianhui Qiu,
Lixin Xia
Publication year - 2018
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.26.017739
Subject(s) - electromagnetically induced transparency , atomic coherence , optics , coherence (philosophical gambling strategy) , coherence time , physics , microwave , atomic system , realization (probability) , amplitude , laser , statistics , mathematics , quantum mechanics
A four-level N-type cold atomic system is proposed for optimizing images storage based on the electromagnetically induced transparency (EIT). Both analytical analysis and numerical simulation clearly show that the application, during the storage time, of an additional intensity-modulated signal field and an additional microwave field can impose an intensity and a phase-dependent factors on the atomic spin coherence in a controlled manner, then the amplitude of the retrieved images can be increased or decreased with an enhancement in the visibility. Our results are very promising for the realization of all-optical information processing of images coherently stored in EIT media in the future.