Results 31 to 40 of about 1,209,390 (285)

Quantum illumination assistant with error-correcting codes

New Journal of Physics, 2020
We scheme how to enhance the detection ability of quantum target recognition without using entanglement resources. Based on the commonly used error-correcting codes and corresponding decoding method, our scheme gives lower error probability and higher ...
Wen-Zhao Zhang, Yu-Han Ma, Jing-Fu Chen, Chang-Pu Sun   +3 more
doaj   +1 more source

In situ upgrade of quantum simulators to universal computers [PDF]

, 2018
Quantum simulators, machines that can replicate the dynamics of quantum systems, are being built as useful devices and are seen as a stepping stone to universal quantum computers.
Benjamin Dive, Alexander Pitchford, Burgarth, Daniel, Florian Mintert, Daniel Burgarth, Dive, B, Mintert, Florian, Pitchford, Alexander   +7 more
core   +1 more source

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

Measurement: 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, Angelo Greco, Emanuele Enrico, Fabrizio Illuminati, Rosario Lo Franco, David Vitali, Patrizia Livreri   +6 more
doaj   +1 more source

Advances in quantum dot intermediate band solar cells [PDF]

, 2010
Several groups have reported on intermediate band solar cells (IBSC) fabricated with InAs/GaAs quantum dots (QD) which exhibit quantum efficiencies (QE) for sub-bandgap photon energies.
Antolín Fernández, Elisa, Hernández Martín, Estela, Stanley, C., C. R. Stanley, Farmer, C., Marti, A., Stanley, Colin, Hernandez, E., Farmer, C.D., C. D. Farmer, A. Luque, E. Antolin, García-Linares Fontes, Pablo, A. Marti, Antolin, E., Ramiro Gonzalez, Iñigo, Ramiro, I., I. Ramiro, Linares, P.G., Luque, A., Luque López, Antonio, Martí Vega, Antonio, P. G. Linares, E. Hernandez   +23 more
core   +1 more source

Maximum advantage of quantum illumination

Physical Review A, 2019
Discriminating between quantum states is a fundamental problem in quantum information protocols. The optimum approach saturates the Helstrom bound, which quantifies the unavoidable error probability of mistaking one state for another. Computing the error probability directly requires complete knowledge and diagonalization of the density matrices ...
Shannon Ray, James Schneeloch, Christopher C. Tison, Paul M. Alsing   +3 more
openaire   +3 more sources

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

IET 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

Quantum Network Discrimination [PDF]

Quantum, 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

Digital Quantum Simulation and Circuit Learning for the Generation of Coherent States [PDF]

, 2022
Coherent states, known as displaced vacuum states, play an important role in quantum information processing, quantum machine learning, and quantum optics.
Eneko Osaba, Liu, Ruilin, Izaskun Oregi, Osaba, Eneko, V. Romero, Sebastián, Esther Villar-Rodriguez, Oregi, Izaskun, Ruilin Liu, Yue Ban, Villar-Rodriguez, Esther, Sebastián V. Romero, Ban, Yue   +11 more
core   +1 more source

Observation of Localized Multi-Spatial-Mode Quadrature Squeezing

Physical 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, M. T. Turnbull, P. G. Petrov, V. Boyer   +3 more
doaj   +1 more source

Measurement-based quantum computing with a spin ensemble coupled to a stripline cavity [PDF]

, 2012
Recently, a new form of quantum memory was proposed. The storage medium is an ensemble of electron spins, coupled to a stripline cavity and an ancillary readout system.
Benjamin, Simon C., Benjamin, SC, Ping, Yuting, Gauger, EM, Ping, Y., Gauger, E.M., Gauger, Erik M.; id_orcid, Ping, Y, Benjamin, Simon, Benjamin, S.C.   +9 more
core   +1 more source