Concepts of quantum non-Markovianity: A hierarchy
Sign Up to like & getrecommendations! Published in 2018 at "Physics Reports"
DOI: 10.1016/j.physrep.2018.07.001
Abstract: Markovian approximation is a widely-employed idea in descriptions of the dynamics of open quantum systems (OQSs). Although it is usually claimed to be a concept inspired by classical Markovianity, the term quantum Markovianity is used… read more here.
Keywords: non markovianity; quantum markovianity; quantum non; quantum ... See more keywords
Quantum non-demolition measurement of an electron spin qubit
Sign Up to like & getrecommendations! Published in 2019 at "Nature Nanotechnology"
DOI: 10.1038/s41565-019-0426-x
Abstract: Measurements of quantum systems inevitably involve disturbance in various forms. Within the limits imposed by quantum mechanics, there exists an ideal projective measurement that does not introduce a back action on the measured observable, known… read more here.
Keywords: electron spin; quantum non; measurement; spin ... See more keywords
Quantum non-Gaussianity and quantification of nonclassicality
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.97.053823
Abstract: The algebraic quantification of nonclassicality, which naturally arises from the quantum superposition principle, is related to properties of regular nonclassicality quasiprobabilities. The latter are obtained by non-Gaussian filtering of the Glauber-Sudarshan $P$~function. They yield lower… read more here.
Keywords: quantification nonclassicality; quantum non; non gaussianity; nonclassicality ... See more keywords
Generalized trace distance approach to quantum non-Markovianity and detection of initial correlations
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.98.012120
Abstract: A measure of quantum non-Markovianity for an open system dynamics, based on revivals of the distinguishability between system states, has been introduced in the literature using the trace distance as quantifier for distinguishability. Recently it… read more here.
Keywords: non markovianity; quantum non; quantum; detection ... See more keywords
Quantum non-Gaussianity certification of photon number-resolving detectors.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.463786
Abstract: We report on direct experimental certification of the quantum non-Gaussian character of a photon number-resolving detector. The certification protocol is based on an adaptation of the existing quantum non-Gaussianity criteria for quantum states to quantum… read more here.
Keywords: gaussianity certification; quantum non; non gaussianity;
Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches
Sign Up to like & getrecommendations! Published in 2022 at "Entropy"
DOI: 10.3390/e24050649
Abstract: Quantum memory effects can be qualitatively understood as a consequence of an environment-to-system backflow of information. Here, we analyze and compare how this concept is interpreted and implemented in different approaches to quantum non-Markovianity. We… read more here.
Keywords: information; system; environment; non markovian ... See more keywords