Results 21 to 30 of about 1,418,125 (307)

Entanglement-enhanced quantum metrology in a noisy environment [PDF]

, 2018
Quantum metrology overcomes standard precision limits and plays a central role in science and technology. Practically it is vulnerable to imperfections such as decoherence.
Bian, Zhihao, Li, Jian, Sanders, Barry C., Wang, Kunkun, Wang, Xiaoping, Xue, Peng, Zhan, Xiang   +6 more
core   +2 more sources

Quantum-Dense Metrology [PDF]

Nature Photonics, 2012
Quantum metrology utilizes entanglement for improving the sensitivity of measurements. Up to now the focus has been on the measurement of just one out of two non-commuting observables.
A Abramovici, A Einstein, A Furusawa, B Lücke, B Sathyaprakash, C Gross, C Silberhorn, CH Bennett, D Leibfried, DJ Ottaway, E Arthurs, GM D'Ariano, H Vahlbruch, Helge Müller-Ebhardt, HJ Kimble, I Afek, J Abadie, J Rarity, J-Y Vinet, Jöran Bauchrowitz, Karsten Danzmann, M Mitchell, M Tsang, Melanie Meinders, P Cappellaro, R Schnabel, Roman Schnabel, S Steinlechner, Sebastian Steinlechner, SL Braunstein, U Leonhardt, V Giovannetti, V Giovannetti, W Wasilewski, WP Bowen, ZY Ou   +35 more
core   +4 more sources

Multi-parameter Quantum Metrology [PDF]

Advances in Physics: X, 2016
The simultaneous quantum estimation of multiple parameters can provide a better precision than estimating them individually. This is an effect that is impossible classically. We review the rich background of multi-parameter quantum metrology, some of the
Baumgratz, Tillmann, Datta, Animesh, Szczykulska, Magdalena   +2 more
core   +4 more sources

Quantum metrology with linear Lie algebra parameterizations [PDF]

Physical Review Research
Lie algebraic techniques are powerful and widely used tools for studying dynamics and metrology in quantum optics. When the Hamiltonian generates a Lie algebra with finite dimension, the unitary evolution can be expressed as a finite product of ...
Ruvi Lecamwasam, Tatiana Iakovleva, Jason Twamley   +2 more
doaj   +2 more sources

Variational-state quantum metrology

New Journal of Physics, 2020
Quantum technologies exploit entanglement to enhance various tasks beyond their classical limits including computation, communication and measurements.
Bálint Koczor, Suguru Endo, Tyson Jones, Yuichiro Matsuzaki, Simon C Benjamin   +4 more
doaj   +4 more sources

Interpreting Quantum Discord in Quantum Metrology [PDF]

Journal of Physics: Conference Series, 2015
Multipartite quantum systems show properties which do not admit a classical explanation. In particular, even nonentangled states can enjoy a kind of quantum correlations called quantum discord. I discuss some recent results on the role of quantum discord
Girolami, Davide
core   +4 more sources

Dissipative quantum metrology in manybody systems of identical particles

New Journal of Physics, 2014
Estimation of physical parameters is essential in almost any part of science and technology. The enhancement of performance in this task (e.g. beating the standard classical shot-noise limit) using available physical resources is a major goal in ...
F Benatti, S Alipour, A T Rezakhani
doaj   +2 more sources

Thermodynamic Principle for Quantum Metrology. [PDF]

Physical Review Letters, 2022
The heat dissipation in quantum metrology represents not only an unavoidable problem towards practical applications of quantum sensing devices but also a fundamental relationship between thermodynamics and quantum metrology.
Yaoming Chu, Jianming Cai
semanticscholar   +4 more sources

Cartan quantum metrology

Physics Open
We address the characterization of two-qubit gates, focusing on bounds to precision in the joint estimation of the three parameters that define their Cartan decomposition.
Gabriele Fazio, Jiayu He, Matteo G.A. Paris   +2 more
doaj   +4 more sources

Memory effects in quantum metrology [PDF]

Physical Review Letters, 2019
Quantum metrology concerns estimating a parameter from multiple identical uses of a quantum channel. We extend quantum metrology beyond this standard setting and consider estimation of a physical process with quantum memory, here referred to as a ...
Yang, Yuxiang
core   +3 more sources