Results 31 to 40 of about 130,740 (286)

Quantum Network Discrimination [PDF]

open access: yesQuantum, 2023
Discrimination between objects, in particular quantum states, is one of the most fundamental tasks in (quantum) information theory. Recent years have seen significant progress towards extending the framework to point-to-point quantum channels.
Christoph Hirche
doaj   +1 more source

Josephson Traveling Wave Parametric Amplifiers as non-classical light source for Microwave Quantum Illumination

open access: yesMeasurement: Sensors, 2021
Detection of low-reflectivity objects can be enriched via the so-called quantum illumination procedure. In order that this quantum procedure outperforms classical detection protocols, entangled states of microwave radiation are initially required.
Luca Fasolo   +6 more
doaj   +1 more source

Observation of Localized Multi-Spatial-Mode Quadrature Squeezing

open access: yesPhysical Review X, 2015
Quantum states of light can improve imaging whenever the image quality and resolution are limited by the quantum noise of the illumination. In the case of a bright illumination, quantum enhancement is obtained for a light field composed of many squeezed ...
C. S. Embrey   +3 more
doaj   +1 more source

Performance of coherent‐state quantum target detection in the context of asymmetric hypothesis testing

open access: yesIET Quantum Communication, 2022
Due to the difficulties of implementing joint measurements, quantum illumination schemes that are based on signal‐idler entanglement are difficult to implement in practice. For this reason, one may consider quantum‐inspired designs of quantum lidar/radar
Gaetana Spedalieri, Stefano Pirandola
doaj   +1 more source

Plasmonic nanoparticle enhanced photocurrent in GaN/InGaN/GaN quantum well solar cells [PDF]

open access: yes, 2010
We demonstrate enhanced external quantum efficiency and current-voltage characteristics due to scattering by 100 nm silver nanoparticles in a single 2.5 nm thick InGaN quantum well photovoltaic device.
Atwater, Harry A.   +3 more
core   +1 more source

Thermally stimulated conductivity in InGaAs/GaAs quantum wire heterostructures

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2016
Thermally stimulated conductivity of the InGaAs-GaAs heterostructures with quantum wires was studied using different quantum energies of exciting illumination.
S.A. Iliash
doaj   +1 more source

A Versatile Quantum Simulator for Coupled Oscillators Using a 1D Chain of Atoms Trapped near an Optical Nanofiber

open access: yesPhotonics, 2021
The transversely confined propagating light modes of a nanophotonic optical waveguide or nanofiber can effectively mediate infinite-range forces. We show that for a linear chain of particles trapped within the waveguide’s evanescent field, transverse ...
Daniela Holzmann   +2 more
doaj   +1 more source

Bi‐Frequency Illumination: A Quantum‐Enhanced Protocol

open access: yesAdvanced Quantum Technologies, 2022
Abstract Quantum‐enhanced, idler‐free sensing protocol to measure the response of a target object to the frequency of a probe in a noisy and lossy scenario is proposed. In this protocol, a target with frequency‐dependent reflectivity embedded in a thermal bath is considered. The aim is to estimate the parameter ,
Mateo Casariego, Yasser Omar, Mikel Sanz
openaire   +4 more sources

Influence of infrared radiation on the electrical characteristics of the surface-barrier nanostructures based on MBE HgCdTe

open access: yesEPJ Web of Conferences, 2017
Impact of illumination on the admittance of the MIS structures based on MBE Hg1-xCdxTe with graded-gap layers and single quantum wells was investigated. It is shown that for HgCdTe-based nanostructures the illumination greatly affects the capacitance and
Pociask-Bialy Malgorzata   +4 more
doaj   +1 more source

Photon-counting statistics-based support vector machine with multi-mode photon illumination for quantum imaging

open access: yesScientific Reports, 2022
We propose a photon-counting-statistics-based imaging process for quantum imaging where background photon noise can be distinguished and eliminated by photon mode estimation from the multi-mode Bose–Einstein distribution.
Jin-Woo Kim   +5 more
doaj   +1 more source

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