Title :
Optimal control of light storage in atomic ensemble based on photon echoes
Author :
Wu, Tingwan ; Chen, Qinzhi
Author_Institution :
School of Science, South China University of Technology, Guangzhou, 510641, China
Abstract :
This paper presents a simple quantum memory method for efficient storage and retrieve of light. The technique is based on the principle of controlled reversible inhomogeneous broadening for which the information of the quantum state light is imprinted in a two-level atoms ensemble and recalled by flipping the external nonuniform electric field. In present work, the induced Stark shift varied linearly with position, and a numerical analysis for this protocol has been studied. It shows that the storage efficiency can nearly reach 100% with a large enough optical depth, and the optimal broadening for a given pulse width is also analyzed.
Keywords :
Atom optics; Equations; Nonuniform electric fields; Numerical analysis; Optical frequency conversion; Optical pulses; Optimal control; Photonics; Proposals; Space vector pulse width modulation; Stark effect; inhomogeneous broadened; optimal control; photon echoes; quantum communication; quantum memory;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
