arXiv:1905.11939 · Optics Express

Quantum noise radar: superresolution with quantum antennas by accessing spatiotemporal correlations

I. Peshko, Dmitri S. Mogilevtsev, Ilya Karuseichyk, A. Mikhalychev, A. P. Nizovtsev, G. Ya. Slepyan, Amir Boag

Published Sep 26, 2019• 15 citations

Abstract

We suggest overcoming the "Rayleigh catastrophe" and reaching superresolution for imaging with both spatially and temporally correlated field of a superradiant quantum antenna. Considering far-field radiation of two interacting spontaneously emitting two-level systems, we show that for the measurement of the temporally delayed second-order correlation function of the scattered field, the Fisher information does not tend to zero with diminishing the distance between a pair of scatterers even for non-sharp time-averaged detection. For position estimation of more scatterers, the measurement of the time-delayed function is able to provide a considerable accuracy gain over the zero-delayed function. We also show that the superresolution with the considered quantum antenna can be achieved for both near-field imaging and for estimating the antenna parameters.

DOI: 10.1364/oe.27.029217

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