Temporal indistinguishability and quantum interference

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PhysRevA.62.043820.pdf (403.39 KB)

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https://link.aps.org/doi/10.1103/PhysRevA.62.043820

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https://doi.org/10.1103/PhysRevA.62.043820
 http://hdl.handle.net/11603/39883

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UMBC Faculty Collection
UMBC Physics Department
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Author/Creator ORCID

https://orcid.org/0000-0002-8387-4568
 https://orcid.org/0000-0002-3399-2101
 https://orcid.org/0000-0001-9098-1399

Date

2000-09-19

Type of Work

journal articles
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Citation of Original Publication

Kim, Yoon-Ho, Vincenzo Berardi, Maria V. Chekhova, Augusto Garuccio, and Yanhua Shih. "Temporal Indistinguishability and Quantum Interference" Physical Review A 62, no. 4 (2000): 043820. https://doi.org/10.1103/PhysRevA.62.043820.

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©2000 American Physical Society

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UMBC Quantum Optics Laboratory

Abstract

A X⁽²⁾ nonlinear optical crystal is pumped by two temporally well-distinguishable femtosecond laser pulses to generate entangled photon pairs in the process of spontaneous parametric down-conversion. We have observed first- and second-order interference between amplitudes generated from the first and the second pump pulse as a function of the time delay between the two pump pulses. The criteria for first- and second-order interference are found to be very different, which reflect the quantum entanglement nature of the state of spontaneous parametric down-conversion.