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Interference effects induced by non-local spatial filtering
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DOI：10.1364/OE.19.017308.png)
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Abstract
En 中文
The spatial correlation between down-converted photons allows for non-local spatial filtering when two-photon coincidences are registered. This allows one to non-locally control the visibility of interference fringes, to observe ghost images and interference patterns, and to retrieve a coherent quantum image from an incoherent field distribution. We show theoretically that non-local spatial filtering can lead to counter-intuitive effects when the pump beam is no longer given by a Gaussian profile. Namely, increased non-local filtering can actually decrease the visibility of interference fringes, contrary to what has been observed so far. We explain this behavior through the transverse spatial parity entanglement of the down-converted photons. (C) 2011 Optical Society of America
Keywords:
PARAMETRIC DOWN-CONVERSION
ORBITAL ANGULAR-MOMENTUM
DOUBLE-SLIT EXPERIMENTS
COINCIDENCE MEASUREMENTS
GHOST INTERFERENCE
VISIBILITY
FRINGES
PHOTON
LIGHT
Journal
IF:
3.3
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6.1W
Citations:
14.3W