Results 11 to 20 of about 1,418,125 (307)
Optical Quantum Metrology [PDF]
PRX Quantum, 2022 The purpose of quantum technologies is to explore how quantum effects can improve on existing solutions for the treatment of information. Quantum photonics sensing holds great promise for reaching a more efficient trade-off between invasivity and quality
Marco Barbieri
doaj +4 more sources
Quantum metrology with quantum-chaotic sensors. [PDF]
Nat Commun, 2018 Enhanced sensing using quantum systems generally relies on preparation of highly non-classical states, such as entangled or squeezed states. Here the authors propose a different approach, based on hypersensitivity of quantum-chaotic dynamics with respect
Fiderer LJ, Braun D.
europepmc +6 more sources
Photonic quantum metrology [PDF]
AVS Quantum Science, 2020 Quantum Metrology is one of the most promising application of quantum technologies. The aim of this research field is the estimation of unknown parameters exploiting quantum resources, whose application can lead to enhanced performances with respect to ...
E. Polino +3 more
semanticscholar +4 more sources
Combining Critical and Quantum Metrology. [PDF]
Physical Review Letters, 2023 Critical metrology relies on the precise preparation of a system in its ground state near a quantum phase transition point where quantum correlations get very strong.
Christoph Hotter, H. Ritsch, K. Gietka
semanticscholar +4 more sources
Optimal and Variational Multiparameter Quantum Metrology and Vector-Field Sensing [PDF]
PRX Quantum, 2023 We study multi-parameter sensing of 2D and 3D vector fields within the Bayesian framework for $SU(2)$ quantum interferometry. We establish a method to determine the optimal quantum sensor, which establishes the fundamental limit on the precision of ...
Raphael Kaubruegger +3 more
semanticscholar +3 more sources
Quantum metrology with imperfect measurements. [PDF]
Nat Commun, 2022 The impact of measurement imperfections on quantum metrology protocols has not been approached in a systematic manner so far. In this work, we tackle this issue by generalising firstly the notion of quantum Fisher information to account for noisy ...
Len YL +3 more
europepmc +3 more sources
Advances in quantum metrology [PDF]
Nature Photonics, 2011 The statistical error in any estimation can be reduced by repeating the measurement and averaging the results. The central limit theorem implies that the reduction is proportional to the square root of the number of repetitions.
V. Giovannetti, S. Lloyd, L. Maccone
semanticscholar +11 more sources
Critical Quantum Metrology Assisted by Real-Time Feedback Control. [PDF]
Physical Review Letters, 2022 We investigate critical quantum metrology, that is, the estimation of parameters in many-body systems close to a quantum critical point, through the lens of Bayesian inference theory.
Raffaele Salvia +2 more
semanticscholar +3 more sources
Physical Review Letters, 2005 We point out a general framework that encompasses most cases in which quantum effects enable an increase in precision when estimating a parameter (quantum metrology).
A. S. Holevo +3 more
core +4 more sources
Control-enhanced non-Markovian quantum metrology
Communications PhysicsQuantum metrology promises unprecedented precision of parameter estimation, but it is often vulnerable to noise. While significant efforts have been devoted to improving the metrology performance in Markovian environments, practical control schemes ...
Xiaodong Yang +8 more
doaj +2 more sources