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arXiv · 1202.3195

Cancellation of atmospheric turbulence effects in entangled two-photon beams

Marcelo V. da Cunha Pereira·Luísa A. P. Filpi·Carlos H. Monken
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Abstract

Turbulent airflow in the atmosphere and the resulting random fluctuations in its refractive index have long been known as a major cause of image deterioration in astronomical imaging and figures among the obstacles for reliable optical communication when information is encoded in the spatial profile of a laser beam. Here we show that using correlation imaging and a suitably prepared source of photon pairs, the most severe of the disturbances inflicted on the beam by turbulence can be cancelled out. Other than a two-photon light source, only linear passive optical elements are needed and, as opposed to adaptive optics techniques, our scheme does not rely on active wavefront correction.

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Marcelo V. da Cunha Pereira, Luísa A. P. Filpi, Carlos H. Monken. 2013-06-08. Cancellation of atmospheric turbulence effects in entangled two-photon beams. https://doi.org/10.1103/physreva.88.053836

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