Gaussian beam quantum radar protocol
arXiv:2309.11834
Abstract
We present an entangled quantum radar protocol. It consists in scanning the sky with a thin Gaussian beam and measuring the travel time of the radiation reflected from the target, as in conventional radars. Here the Gaussian beam is composed of photons entangled in the frequency degrees of freedom. We show that this provides a quantum enhancement over the unentangled case, as is usual in quantum metrology.
6 pages