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Q: Fachverband Quantenoptik und Photonik
Q 51: Quantum Optics IV
Q 51.4: Vortrag
Donnerstag, 12. März 2020, 14:45–15:00, f342
Quantum illumination for remote target detection — •Giacomo Sorelli1,2, Nicolas Treps2, Frédéric Grosshans3, Claude Fabre2, and Fabrice Boust1 — 1Département ElectroMagnétisme et Radar, Onera - Paliseau - France — 2Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France - Paris - France — 3LIP6, Sorbonne Université, CNRS - Paris - France
Entanglement revealed to be a fundamental resource to provide sensing performance beyond those allowed by classical physics. It is therefore natural to explore its potential to improve radar technology. The first attempt in this direction is represented by quantum illumination [1]: an entanglement-based protocol to detect a low-reflectivity target immersed in high thermal background. The most astonishing characteristic of this protocol is that, under specific energy constraints, it provides a quantum advantage, even though noise and losses completely destroy the initial entanglement.
In this talk we will review the continuous variable version [2] of the quantum illumination protocol. In particular, by using figures of merit typical of the classical radar literature, we will evaluate its performances in realistic radar and lidar scenarios. We will show that the regime where the standard quantum illumination protocol provide an advantage over classical radar is of little use in such realistic settings and discuss how one could overcome this limitation.
[1] S. Lloyd, Science 321, 5895, 1463-1465 (2008)
[2] Tan et al., Phys. Rev. Lett. 101, 253601 (2008)