Quantum Illumination with Gaussian States
Si-Hui Tan,Baris I. Erkmen,Vittorio Giovannetti,Saikat Guha,Seth Lloyd,Lorenzo Maccone,Stefano Pirandola,Jeffrey H. Shapiro +7 more
TLDR
By making the optimum joint measurement on the light received from the target region together with the retained spontaneous parametric down-conversion idler beam, the quantum-illumination system realizes a 6 dB advantage in the error-probability exponent over the optimum reception coherent-state system.Abstract:
An optical transmitter irradiates a target region containing a bright thermal-noise bath in which a low-reflectivity object might be embedded. The light received from this region is used to decide whether the object is present or absent. The performance achieved using a coherent-state transmitter is compared with that of a quantum-illumination transmitter, i.e., one that employs the signal beam obtained from spontaneous parametric down-conversion. By making the optimum joint measurement on the light received from the target region together with the retained spontaneous parametric down-conversion idler beam, the quantum-illumination system realizes a 6 dB advantage in the error-probability exponent over the optimum reception coherent-state system. This advantage accrues despite there being no entanglement between the light collected from the target region and the retained idler beam.read more
Citations
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Journal ArticleDOI
Quantum-enhanced barcode decoding and pattern recognition
TL;DR: In this article, the authors generalize this theoretical model to the multi-partite setting of barcode decoding and pattern recognition, and demonstrate the advantage of using quantum sensors for pattern recognition with the nearest neighbor classifier, a supervised learning algorithm and numerically verify this prediction for handwritten digit classification.
Journal ArticleDOI
Josephson Traveling Wave Parametric Amplifiers as non-classical light source for Microwave Quantum Illumination
Luca Fasolo,Angelo Greco,Emanuele Enrico,Fabrizio Illuminati,Rosario Lo Franco,David Vitali,Patrizia Livreri +6 more
TL;DR: In this paper, the role of Josephson Traveling Wave Parametric Amplifiers (JTWPAs), based on circuit-QED components, as suitable sources of a twomode squeezed vacuum state, a special signal-idler entangled state, is discussed.
Proceedings ArticleDOI
Improving QKD for Entangled States with Low Squeezing via Non-Gaussian Operations
TL;DR: In this paper, the effectiveness of photon subtraction (PS) and quantum scissors (QS) in terms of Continuous Variable (CV)-Quantum Key Distribution (QKD) over lossy channels is evaluated.
Proceedings ArticleDOI
Practical route to entanglement-enhanced communication over noisy bosonic channels
TL;DR: In this article, structured encoding and decoding schemes for entanglement-assisted classical communication in a lossy and noisy scenario are presented. And phase encoding on the entangled two-mode squeezed vacuum is shown to be optimal and practical receivers are analyzed.
Dissertation
Controlling local quantum fluctuations of light using four-wave mixing in an atomic vapour
TL;DR: In this article, a four-wave mixing process in a rubidium 85 vapour is used to experimentally generate squeezed light, and the properties of this squeezed light are investigated, through the use of homodyne detection with a bichromatic LO.