Characterization of space-momentum entangled photon with a time resolving CMOS SPAD array

• URL: http://arxiv.org/abs/2006.10791v1
• Date: Thu, 18 Jun 2020 18:14:14 GMT
• Title: Characterization of space-momentum entangled photon with a time resolving CMOS SPAD array
• Authors: Bruno Eckmann, B\"anz Bessire, Manuel Untern\"ahrer, Leonardo Gasparini, Matteo Perenzoni, Andr\'e Stefanov
• Abstract summary: We present here the characterization of entangled light with a sensor specifically designed for quantum imaging applications. The sensors is time-tagging each detection events at the pixel level with sub-nanosecond accuracy, within frames of 50 ns. We show the ability of the sensor to characterize space-momentum entangled photon pairs emitted by spontaneous parametric downconversion.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Single photon avalanche diode arrays can provide both the spatial and temporal information of each detected photon. We present here the characterization of entangled light with a sensor specifically designed for quantum imaging applications. The sensors is time-tagging each detection events at the pixel level with sub-nanosecond accuracy, within frames of 50 ns. The spatial correlations between any number of detections in a defined temporal window can thus be directly extracted from the data. We show the ability of the sensor to characterize space-momentum entangled photon pairs emitted by spontaneous parametric downconversion. Their entanglement is demonstrated by violating an EPR-type inequality.

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