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arXiv · 2105.11394

A quantum-enhanced wide-field phase imager

Robin Camphausen·Álvaro Cuevas·Luc Duempelmann·Roland A. Terborg·Ewelina Wajs·Simone Tisa·Alessandro Ruggeri·Iris Cusini·Fabian Steinlechner·Valerio Pruneri
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Abstract

Quantum techniques can be used to enhance the signal-to-noise ratio in optical imaging. Leveraging the latest advances in single photon avalanche diode array cameras and multi-photon detection techniques, here we introduce a super-sensitive phase imager, which uses space-polarization hyper-entanglement to operate over a large field-of-view without the need of scanning operation. We show quantum-enhanced imaging of birefringent and non-birefringent phase samples over large areas, with sensitivity improvements over equivalent classical measurements carried out with equal number of photons. The practical applicability is demonstrated by imaging a biomedical protein microarray sample. Our quantum-enhanced phase imaging technology is inherently scalable to high resolution images, and represents an essential step towards practical quantum imaging.

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Robin Camphausen, Álvaro Cuevas, Luc Duempelmann, Roland A. Terborg, Ewelina Wajs, Simone Tisa, Alessandro Ruggeri, Iris Cusini, Fabian Steinlechner, Valerio Pruneri. 2021-05-24. A quantum-enhanced wide-field phase imager. https://doi.org/10.1126/sciadv.abj2155

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