Fourth-Order Interference in Femtosecond Spontaneous Parametric Down-Conversion

Chin. Phys. Lett.

2000, Vol. 17

Issue (10): 726-727 DOI:

Original Articles

Fourth-Order Interference in Femtosecond Spontaneous Parametric Down-Conversion

JIANG Yun-Kun;SHI Bao-Sen;LI Jian;FAN Xiao-Feng;GUO Guang-Can

Laboratory of Quantum Communication and Quantum Computation, Department of Physics, University of Science and Technology of China, Hefei 230026

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JIANG Yun-Kun, SHI Bao-Sen, LI Jian et al 2000 Chin. Phys. Lett. 17 726-727

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Abstract We report a fourth-order interference experiment in which pairs of photons are produced in spontaneous parametric down-conversion pumped by femtosecond pulses interfere in a Hong-Ou-Mandel interferometer. The visibility of the interference is (64±4)%, exceeding the bound of 50% predicted by classical interference theory.

Keywords: 42.50.Dv 42.65.Ky

Published: 01 October 2000

PACS:	42.50.Dv	(Quantum state engineering and measurements)
	42.65.Ky	(Frequency conversion; harmonic generation, including higher-order harmonic generation)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2000/V17/I10/0726

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