16 research outputs found
Experimental realisation of quantum illumination
We present the first experimental realisation of the quantum illumination
protocol proposed in Ref.s [S. Lloyd, Science 321, 1463 (2008); S. Tan et al.,
Phys. Rev. Lett. 101, 253601 (2008)], achieved in a simple feasible
experimental scheme based on photon-number correlations. A main achievement of
our result is the demonstration of a strong robustness of the quantum protocol
to noise and losses, that challenges some widespread wisdom about quantum
technologies.Comment: PRL in pres
Systematic analysis of SNR in bipartite Ghost Imaging with classical and quantum light
We present a complete and exhaustive theory of signal-to-noise-ratio in
bipartite ghost imaging with classical (thermal) and quantum (twin beams)
light. The theory is compared with experiment for both twin beams and thermal
light in a certain regime of interest
Advances in photonic quantum sensing
Quantum sensing has become a mature and broad field. It is generally related
with the idea of using quantum resources to boost the performance of a number
of practical tasks, including the radar-like detection of faint objects, the
readout of information from optical memories or fragile physical systems, and
the optical resolution of extremely close point-like sources. Here we first
focus on the basic tools behind quantum sensing, discussing the most recent and
general formulations for the problems of quantum parameter estimation and
hypothesis testing. With this basic background in our hands, we then review
emerging applications of quantum sensing in the photonic regime both from a
theoretical and experimental point of view. Besides the state-of-the-art, we
also discuss open problems and potential next steps.Comment: Review in press on Nature Photonics. This is a preliminary version to
be updated after publication. Both manuscript and reference list will be
expande