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Single Molecule Spectroscopy and Superresolution Imaging

Quantum imaging with SPAD arrays (Conference Presentation)

Gur Lubin, Ron Tenne, Ivan Michel Antolović, Edoardo Charbon A, Claudio E. Bruschini, Dan Oron

Published Mar 9, 2020• 0 citations
Publisher

Abstract

The emerging field of quantum imaging introduces new methods to overcome classical limitations in optical microscopy. A detection apparatus capable of analyzing the quantum signature of light, is a crucial component in the heart of any such method. We present a novel quantum imaging modality, based on a state-of-the-art single photon avalanche diode (SPAD) array in a confocal setup. This modality enables unprecedented simplicity and scalability in imaging temporal photon correlations. We demonstrate the potential of this approach by measuring temporal correlations of classical and quantum sources, as well as demonstrate a quantum super-resolution technique.

DOI
10.1117/12.2544716

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The emerging field of quantum imaging introduces new methods to overcome classical limitations in optical microscopy. A detection apparatus capable of analyzing the quantum signature of light, is a crucial component in the heart of any such method. We present a novel quantum imaging modality, based on a state-of-the-art single photon avalanche diode (SPAD) array in a confocal setup. This modality enables unprecedented simplicity and scalability in imaging temporal photon correlations. We demonstrate the potential of this approach by measuring temporal correlations of classical and quantum sources, as well as demonstrate a quantum super-resolution technique.
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Single-photon avalanche diode (SPAD) arrays are essential tools in biophotonics, optical ranging and sensing, and quantum optics. However, their small number of pixels, low quantum efficiency, and small fill factor have so far hindered their use for practical imaging applications. Here, we demonstrate full-field entangled photon-pair correlation imaging using a 100-kpixel SPAD camera. By measuring photon coincidences between more than 500 million pairs of positions, we retrieve the full point spread function of the imaging system and subsequently high-resolution images of target objects illuminated by spatially entangled photon pairs. We show that our imaging approach is robust against stray light, enabling quantum imaging technologies to move beyond laboratory experiments towards real-world applications such as quantum light detection and ranging.
CMOS, detector arrays, interferometer, phase twinning, quantum imaging, SPAD (single photon avalanche diode) We continue our previous program where we introduced a set of quantum-based design rules directed at quantum engineers who design single-photon quantum communications and quantum imaging devices. Here, we report on experimental progress using SPAD (single photon avalanche diode) arrays of our design and fabricated in CMOS (complementary metal oxide semiconductor) technology. Emerging high-resolution imaging techniques based on SPAD arrays have proven useful in a variety of disciplines including bio-fluorescence microscopy and 3D vision systems. They have also been
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Quantum techniques are commonly used to enhance measurement performance in many fields, such as imaging, microscopy, communications, computing and metrology. In quantum imaging and microscopy, entangled photons are exploited to improve image resolution and sensitivity, overcoming the diffraction limit and providing Sub-Shot Noise (SSN) measurements [1] . Super resolution imaging, SSN imaging, quantum-enhanced displacement sensing, correlation plenoptic imaging and ghost imaging are different quantum techniques used to enhance image quality. All them require time-resolved single-photon detectors, capable to detect photon coincidences with sub-nanosecond precision.