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Frontiers in Optics

Phase-matched Generation of Phase Conjugation Wave Based on Atomic Coherence in Solids

Zhaohui Zhai, Guoquan Zhang, Yiling Dou, Jingjun Xu

Published Jan 1, 2010• 0 citations
Publisher

Abstract

Phase conjugation wave was generated in a solid based on stored atomic coherence via electromagnetically induced transparency effect. The phase matching condition was characterized both theoretically and experimentally in detail. Simulations fit experimental data well.
DOI
10.1364/fio.2010.fmi3

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A nondegenerate phase-conjugate wave was generated via stored atomic coherence in a Pr3+:Y2SiO5{\mathrm{Pr}}^{3+}:{\mathrm{Y}}_{2}{\mathrm{SiO}}_{5}Pr3+:Y2​SiO5​ crystal based on the electromagnetically induced transparency effect, and its capability for wave-front reconstruction of phase distortion was demonstrated experimentally. The phase-matching condition during the storage-retrieval process of the phase-conjugate wave was characterized both experimentally and theoretically in detail. Theoretical simulations fit the experimental data very well. Such a scheme of storage and retrieval of the phase-conjugate wave may have potential applications in optical signal processing and information security.
Atomic coherence is the result of interaction between light and materials,which leads to many important physical phenomenon.Currently,most experimental researches on atomic coherence are reported in atomic gases.Compared with atomic gases,the related experimental researches in solid materials have more practical applications.This paper introduces the recent research progress of atomic coherence in solid-state materials in detail,including the Electromagnetically Induced Transparency(EIT) in solid materials,light velocity reduction and coherent storage,controllable eraser of optical storage information,all-optical route based on optical storage,optical velocity reduction and reversible storage of double light pulses and enhanced four-wave mixing based on atomic coherence,it also discusses its application to relative fields.
The phenomenon of coherent population trapping (CPT) of an atom (or solid state "artificial atom"), and the associated effect of electromagnetically induced transparency (EIT), are clear demonstrations of quantum interference due to coherence in multilevel quantum systems. We report observation of CPT in a superconducting phase qubit by simultaneously driving two coherent transitions in a Lambda-type configuration, utilizing the three lowest lying levels of a local minimum of a phase qubit. We observe 60(+/-7)% suppression of the excited state population under conditions of CPT resonance. We present data and matching theoretical simulations showing the development of CPT in time. Finally, we used the observed time dependence of the excited state population to characterize quantum dephasing times of the system.