Multidimensional quantum-enhanced target detection via spectrotemporal-correlation measurements
Yingwen Zhang,Duncan G. England,Andrei Nomerotski,Peter Svihra,Peter Svihra,Steven Ferrante,Paul Hockett,Benjamin J. Sussman,Benjamin J. Sussman +8 more
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In this paper, the authors investigated quantum-enhanced target detection in the presence of large background noise using multidimensional quantum correlations between photon pairs generated through spontaneous parametric down-conversion.Abstract:
In this work we investigate quantum-enhanced target detection in the presence of large background noise using multidimensional quantum correlations between photon pairs generated through spontaneous parametric down-conversion. Until now similar experiments have only utilized one of the photon pairs' many degrees of freedom such as temporal correlations and photon number correlations. Here, we utilized both temporal and spectral correlations of the photon pairs and achieved over an order of magnitude reduction to the background noise and in turn significant reduction to data acquisition time when compared to utilizing only temporal modes. We believe this work represents an important step in realizing a practical, real-time quantum-enhanced target detection system. The demonstrated technique will also be of importance in many other quantum sensing applications and quantum communications.read more
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Imaging and certifying high-dimensional entanglement with a single-photon avalanche diode camera
Bienvenu Ndagano,Hugo Defienne,Ashley Lyons,Ilya Starshynov,Frederica Villa,Simone Tisa,Daniele Faccio +6 more
TL;DR: In this article, a single-photon avalanche diode (SPAD) camera was used to measure the spatial joint probability distribution of a bi-oton state produced by spontaneous parametric down-conversion, with statistics taken over 107 frames.
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Distributed quantum sensing
Zheshen Zhang,Quntao Zhuang +1 more
TL;DR: This review formulates distributed quantum sensing (DQS) from a quantum-information perspective and describes DQS protocols and their experimental demonstrations.
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Counting of Hong-Ou-Mandel Bunched Optical Photons Using a Fast Pixel Camera.
TL;DR: It is shown that the time and spatial resolution of the camera enables independent detection of two photons emerging simultaneously from a single spatial mode.
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Multivariate discrimination in quantum target detection
Peter Svihra,Peter Svihra,Yingwen Zhang,Paul Hockett,Steven Ferrante,Benjamin J. Sussman,Benjamin J. Sussman,Duncan G. England,Andrei Nomerotski +8 more
TL;DR: In this article, a multivariate technique of likelihood ratios for improved discrimination of signal and background in multi-dimensional quantum target detection is described, which combines two independent variables, time difference and summed energy, of a photon pair from the spontaneous parametric downconversion source into an optimal discriminant.
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Full-field quantum imaging with a single-photon avalanche diode camera
TL;DR: In this article, the authors demonstrate full-field entangled photon-pair correlation imaging using a 100-kpixel SPAD camera and retrieve the full point spread function of the imaging system and subsequently high resolution images of target objects illuminated by spatially entangled photon pairs.
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