期刊
IEEE JOURNAL OF QUANTUM ELECTRONICS
卷 46, 期 12, 页码 1739-1745出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2010.2063419
关键词
Nonlinear optics; parametric fluorescence; quantum information; quantum optics; twin photons
资金
- Japan Society for the Promotion of Science
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 Schrodinger 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.
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