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

Abstract

Measuring simultaneous correlations of intensity fluctuations, one can exploit photon correlations of the imaging source and improve resolution in comparison with the intensity detection. However, in this case also information loss unavoidable for intensity detection eventually leads to the phenomenon known as 'the Rayleigh catastrophe'. When the details of the imaged object become much smaller than the certain value defined by the wavelength of the imaging field and parameters of the imaging set-up, the information about any individual detail tends to zero making practically unfeasible inferring object parameters from the measured correlation functions