Results 51 to 60 of about 142,936 (276)
Transactional Interpretation for the Principle of Minimum Fisher Information
Entropy, 2021 The principle of minimum Fisher information states that in the set of acceptable probability distributions characterizing the given system, it is best done by the one that minimizes the corresponding Fisher information.
Marcin Makowski +3 more
doaj +1 more source
Quantum Fisher and Skew information for Unruh accelerated Dirac qubit [PDF]
, 2015 We develop a Bloch vector representation of Unruh channel for a Dirac field mode. This is used to provide a unified, analytical treatment of quantum Fisher and Skew information for a qubit subjected to the Unruh channel, both in its pure form as well as ...
Alok, Ashutosh Kumar +2 more
core +2 more sources
Fisher information and asymptotic normality in system identification for quantum Markov chains
, 2011 This paper deals with the problem of estimating the coupling constant $\theta$ of a mixing quantum Markov chain. For a repeated measurement on the chain's output we show that the outcomes' time average has an asymptotically normal (Gaussian) distribution,
A. S. Holevo +10 more
core +1 more source
Exponential time-scaling of estimation precision by reaching a quantum critical point
Physical Review Research, 2022 Quantum metrology refers to the use of quantum resources in parameter-estimation protocols, aiming at enhancing its precision. The quantum Fisher information is a key quantity in this context, setting the ultimate achievable precision with respect to ...
Louis Garbe +3 more
doaj +1 more source
A sufficient Entanglement Criterion Based On Quantum Fisher Information and Variance
, 2020 We derive criterion in the form of inequality based on quantum Fisher information and quantum variance to detect multipartite entanglement. It can be regarded as complementary of the well-established PPT criterion in the sense that it can also detect ...
Fei, Shao-Ming, Zhang, Qing-Hua
core +1 more source
Fisher information of a black hole spacetime
Journal of High Energy Physics, 2023 Relativistic quantum metrology is the study of optimal measurement procedures within systems that have both quantum and relativistic components. Here we use Unruh-DeWitt detectors coupled to a massless scalar field as probes of thermal parameters in ...
Everett Patterson, Robert B. Mann
doaj +1 more source
Measurement cost of metric-aware variational quantum algorithms
, 2020 Variational quantum algorithms are promising tools for near-term quantum computers as their shallow circuits are robust to experimental imperfections. Their practical applicability, however, strongly depends on how many times their circuits need to be ...
Koczor, Bálint, van Straaten, Barnaby
core +1 more source
Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)
Advanced Functional Materials, EarlyView.Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao +5 more
wiley +1 more source
Fisher information from stochastic quantum measurements
, 2016 The unavoidable interaction between a quantum system and the external noisy environment can be mimicked by a sequence of stochastic measurements whose outcomes are neglected.
Caruso, Filippo +3 more
core +1 more source
Advanced Functional Materials, EarlyView.DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen +3 more
wiley +1 more source