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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Microwave quantum illumination with correlation-to-displacement conversion
TL;DR: In this article, the authors proposed an extension of the correlation-to-displacement conversion module to accommodate experimental imperfections that are ubiquitous in microwave systems and analyzed the quantum advantage under different scenarios with a Kennedy receiver in the final measurement.
Enhancement in the mean square range delay accuracy by means of multiple entangled photon states quantum illumination
TL;DR: In this paper , a generalization of Lloyd's protocol to the case where signal states describe two photons is presented, which reduces the probability of error with respect to Lloyd's quantum illumination.
Journal ArticleDOI
Physical-Layer Supervised Learning Assisted by an Entangled Sensor Network
Quntao Zhuang,Zheshen Zhang +1 more
TL;DR: This work introduces supervised learning enhanced by an entangled sensor network (SLEEN) as a means to carry out SL tasks at the physical layer where a quantum advantage is achieved and compares the performance of SLEEN with separable-state SL schemes and observes an appreciable entanglement-enabled performance gain even in the presence of loss.
Proceedings ArticleDOI
Advantages and Limitations of Quantum Radar
TL;DR: The use of entangled photons to interrogate a region of space where a target is supposed to be, gives a lower probability of error than using a classical signal as discussed by the authors , which is possible because of the extra information that the quantum entanglement property can give us.
Biomedical Sensing Using Quantum Radars Based on Josephson Parametric Amplifiers
TL;DR: In this article, the feasibility of using microwave quantum radars in biomedical sensing applications, with a heavy focus on the equipment needed to operate such radars, is discussed, and it is shown that the most important requirement for operating a JPA is the need for cryogenic cooling.