The Quantum Illumination Story
TLDR
In this article, an entanglement-based approach to quantum radar is described, and the authors show that despite the loss and noise that destroy its initial entenglement, quantum illumination does offer a target-detection performance improvement over a classical radar of the same transmitted energy.Abstract:
Superposition and entanglement, the quintessential characteristics of quantum physics, have been shown to provide communication, computation, and sensing capabilities that go beyond what classical physics will permit. It is natural, therefore, to explore their application to radar, despite the fact that decoherence—caused by the loss and noise encountered in radar sensing—destroys these fragile quantum properties. This article tells the story of “quantum illumination,” an entanglement-based approach to quantum radar, from its inception to its current understanding. Remarkably, despite loss and noise that destroy its initial entanglement, quantum illumination does offer a target-detection performance improvement over a classical radar of the same transmitted energy. A realistic assessment of that improvement's utility, however, shows that its value is severely limited. Nevertheless, the fact that entanglement can be of value on an entanglement-breaking channel—the meta-lesson of the quantum illumination story—should spur continued research on quantum radar.read more
Citations
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Enhanced sensitivity of the LIGO gravitational wave detector by using squeezed states of light
Lisa Barsotti,Sebastien Biscans,T. P. Bodiya,F. Donovan,S. E. Dwyer,Reed Essick,Matthew Evans,S. Foley,Peter Fritschel,Slawomir Gras,T. Isogai,Erik Katsavounidis,J. S. Kissel,P. Kwee,M. MacInnis,K. Mason,Fabrice Matichard,Nergis Mavalvala,R. Mittleman,Eric Oelker,Shannon Sankar,David H. Shoemaker,Ruslan Vaulin,Salvatore Vitale,Samuel J. Waldman,Rainer Weiss,Christopher Wipf,Fan Zhang,Michael E Zucker +28 more
TL;DR: In this article, the authors inject squeezed states to improve the performance of one of the detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) beyond the quantum noise limit, most notably in the frequency region down to 150 Hz.
Proceedings ArticleDOI
Optimum mixed-state discrimination for noisy entanglement-enhanced sensing
TL;DR: In this paper, a structured receiver for optimum mixed-state discrimination in quantum illumination target detection is proposed, paving the way for entanglement-enhanced minimum-error probability sensing in an entangled-breaking environment.
Proceedings ArticleDOI
The quantum illumination story
TL;DR: This talk will answer the story of “quantum illumination”, from its beginnings through recent theoretical and experimental results, and show the fact that entanglement can be of value on anEntanglement-breaking channel — the meta-lesson of the quantum illumination story — should spur continued research on quantum radar.
Journal ArticleDOI
Entanglement-Based Quantum Radar: From Myth to Reality
TL;DR: By analyzing the QTMS radar prototype, this article points out a technological route to an entanglement-based quantum radar that can, in principle, perform all tasks that radars can and must do, such as array processing, clutter suppression, and image processing.
Journal ArticleDOI
Fundamental limits of quantum illumination
Ranjith Nair,Mile Gu +1 more
TL;DR: In this paper, the average error probability of detecting both specular and fading targets and the mean squared error of estimating the reflectance of a detected target were derived for a QI system using multiple copies of low-brightness two-mode squeezed vacuum states.
References
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Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?
TL;DR: Consideration of the problem of making predictions concerning a system on the basis of measurements made on another system that had previously interacted with it leads to the result that one is led to conclude that the description of reality as given by a wave function is not complete.
Proceedings ArticleDOI
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