期刊
OPTICS EXPRESS
卷 28, 期 21, 页码 31553-31571出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.401260
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资金
- Horizon 2020 Framework Programme (project SUPERTWIN) [686731]
- Horizon 2020 Framework Programme (Research and Innovation Programme) [852045]
Single-photon avalanche diode arrays can provide both the spatial and temporal information of each detected photon. We present here the characterization of spatially entangled photons with a 32 x 32 pixel sensor, specifically designed for quantum imaging applications. The sensor is time-tagging each detection event at 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.The space-momentum entanglement of photon pairs is demonstrated by violating an EPR-type inequality directly from the measured near-field correlations and far-field anti-correlations. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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