Quantum radar
arXiv:1905.02672 · doi:10.1103/PhysRevLett.124.200503
Abstract
We propose a quantum metrology protocol for the localization of a non-cooperative point-like target in three-dimensional space, by illuminating it with electromagnetic waves. It employs all the spatial degrees of freedom of N entangled photons to achieve an uncertainty in localization that is sqrt(N) times smaller for each spatial direction than what could be achieved by N independent photons.
arXiv comment5 pages, one figure
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