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
More filters
Continuous variable quantum teleportation in a dissipative environment: Comparison of non-Gaussian operations before and after noisy channel
TL;DR: In this paper , the authors explore the relative advantages in continuous-variable quantum teleportation when non-Gaussian operations, namely, photon subtraction, addition, and catalysis, are performed before and after interaction with a noisy channel.
Propagation characteristics of laser light under the influence of atmospheric disturbance
TL;DR: In this article , the authors investigated the propagation characteristics of laser light in an atmosphere with thermaluctuation and air flow and found that thermal flow has a significant effect on the intensity distribution of light waves but the effect of air flow is small.
Proceedings ArticleDOI
Quantum-enhanced rejection of environmental noise with spectral entanglement
TL;DR: In this paper, an entanglement with an observer-retained ancilla has been used to improve the precision of optical path measurement with spectral Bell states in a noisy channel.
Journal ArticleDOI
Quantum entropy and central limit theorem
TL;DR: In this paper , a quantum convolutional framework for discrete-variable (DV) quantum systems is introduced, and a bound on the rate of convergence in the central limit theorem is provided.
Journal ArticleDOI
Quantum loss sensing with two-mode squeezed vacuum state under noisy and lossy environment
Changsuk Noh,Chang-Woo Lee +1 more
TL;DR: In this paper , the authors investigated quantum advantages in loss sensing when the two-mode squeezed vacuum state is used as a probe and showed that quantum advantages persist even under strong thermal background noise, in comparison with the classical scheme which uses a single-mode coherent state that directly suffers from thermal noise.