Title :
Quantum Theory Analysis of Counterpropagating Twin Photon Generation by Parametric Downconversion
Author :
Suhara, Toshiaki ; Ohno, Makoto
Author_Institution :
Dept. of Electr., Electron. & Inf. Eng., Osaka Univ., Suita, Japan
Abstract :
Integrated nonlinear optical devices for the generation of twin photon beams are expected to be a key element for the development of quantum information techniques. This paper presents a quantum theory analysis of counterpropagating twin photon generation (CPTPG) by spontaneous parametric downconversion. Full descriptions of the quantum states of the twin photon beams having unique features are obtained in the Heisenberg and Schrödinger pictures. Mathematical expressions useful for device design and quantitative prediction of the performances, such as efficiency, wavelength spectrum and bandwidth, and photon correlation time, are deduced. Numerical data are given for specific quasi-phase-matched LiNbO3 waveguide CPTPG devices.
Keywords :
Schrodinger equation; coupled mode analysis; integrated optics; light propagation; lithium compounds; optical design techniques; optical parametric devices; optical phase matching; optical waveguides; optical wavelength conversion; photon counting; quantum theory; Heisenberg pictures; LiNbO3; Schrodinger equations; counterpropagating twin photon generation; device design; integrated nonlinear optical devices; photon correlation time; quantum states; quantum theory; quasiphase-matched waveguide CPTPG device; spontaneous parametric downconversion; Bandwidth; Correlation; Fluorescence; Optical waveguides; Photonics; Quantum mechanics; Structural beams; Nonlinear optics; parametric fluorescence; quantum information; quantum optics; twin photons;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2010.2063419
