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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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Cite this article: |
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.
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Keywords:
42.50.Dv
42.65.Ky
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Published: 01 October 2000
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PACS: |
42.50.Dv
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(Quantum state engineering and measurements)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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