Turbulence-free interference induced by the turbulence itself

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5.0031474.pdf (1.59 MB)
 turbaftercoh_apl_supp.pdf (206.76 KB)

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https://aip.scitation.org/doi/full/10.1063/5.0031474

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https://doi.org/10.1063/5.0031474
 http://hdl.handle.net/11603/20292

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UMBC Physics Department
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2020-12-11

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journal articles
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Citation of Original Publication

Smith, Thomas A. Shih, Yanhua. "Turbulence-free interference induced by the turbulence itself" APL Photonics 5,12 (2020) https://aip.scitation.org/doi/full/10.1063/5.0031474

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Abstract

When a laser beam is incident on a double-slit interferometer without turbulence, the classic Young’s double-slit interference is present in the first-order measurement of the mean photon number (or intensity), while the second-order measurement of photon number fluctuation correlation (or intensity fluctuation correlation) yields a trivial constant. When optical turbulence is introduced, it destroys the classic interference present in the measurement of the photon number; however, two-photon interference appears in the measurement of photon number fluctuation correlation. This interesting observation means that the observed two-photon interference is not only observable through turbulence, i.e., turbulence-free, but also induced by the turbulence itself. Turbulence-free two-photon interference induced by the turbulence itself allows for interferometric sensing through strong turbulence when coherent radiation, such as a laser, is applied.