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Conference on Lasers and Electro-Optics

Discerning Polarization Objects using Non-local Measurements with Metasurfaces

Andres Vega, Kai Wang, Shaun Lung, Daniel E. Jones, Michael Brodsky, Thomas Pertsch, Frank Setzpfandt, Andrey A. Sukhorukov

Published Jan 1, 2020• 0 citations
Publisher

Abstract

We present an original non-local ghost measurement scheme with polarization-entangled photons, where nanostructured dielectric metasurfaces enable discrimination between a set of objects with different polarization characteristics, including fully or partially transparent birefringent elements.
DOI
10.1364/cleo_qels.2020.fm1c.7

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We develop a concept of metasurface-assisted ghost imaging for nonlocal discrimination between a set of polarization objects. The specially designed metasurfaces are incorporated in the imaging system to perform parallel state transformations in general elliptical bases of quantum-entangled or classically correlated photons. Then, only four or fewer correlation measurements between multiple metasurface outputs and a simple polarization-insensitive bucket detector after the object can allow for the identification of fully or partially transparent polarization elements and their arbitrary orientation angles. The approach can find applications for real-time and low-light imaging across diverse spectral regions in dynamic environments.
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Quantum entanglement is a key resource that can be exploited for a range of applications such as quantum teleportation, quantum computation, and quantum cryptography. However, efforts to exploit entanglement in imaging systems have so far led to solutions such as ghost imaging, that have since found classical implementations. Here, we demonstrate an optical imaging protocol that relies uniquely on entanglement: Two polarizing patterns imprinted and superimposed on a metasurface are separately imaged only when using entangled photons. Unentangled light is not able to distinguish between the two patterns. Entangled single-photon imaging of functional metasurfaces promises advances towards the use of nanostructured subwavelength thin devices in quantum information protocols and a route to efficient quantum state tomography.