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Decoherence, Anti-Decoherence, and Fisher Information [PDF]
Entropy, 2021 In this work, we study quantum decoherence as reflected by the dynamics of a system that accounts for the interaction between matter and a given field. The process is described by an important information geometry tool: Fisher’s information measure (FIM).
Andres M. Kowalski, Angelo Plastino
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Journal of Cosmology and Astroparticle Physics, 2022 Abstract In quantum information theory, quantum discord has been proposed as a tool to characterise the presence of “quantum correlations” between the subparts of a given system. Whether a system behaves quantum-mechanically or classically is believed to be impacted by the phenomenon of decoherence, which originates from the unavoidable ...
Martin, Jerome +2 more
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The Metaphysics of Decoherence [PDF]
Erkenntnis, 2021 AbstractThe paper investigates the type of realism that best suits the framework of decoherence taken at face value without postulating a plurality of worlds, or additional hidden variables, or non-unitary dynamical mechanisms. It is argued that this reading of decoherence leads to a type of perspectival realism which is extremely radical, especially ...
Antonio Vassallo, Davide Romano
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Gravitational decoherence [PDF]
Classical and Quantum Gravity, 2017 We discuss effects of loss of coherence in low energy quantum systems caused by or related to gravitation, referred to as gravitational decoherence. These effects, resulting from random metric fluctuations, for instance, promise to be accessible by relatively inexpensive table-top experiments, way before the scales where true quantum gravity effects ...
Angelo Bassi +2 more
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Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2023 We investigate the non-equilibrium thermodynamics of pure decoherence. In a pure decoherence process, the system Hamiltonian is a constant of motion and there is no direct energy exchange between the system and its surroundings. Nevertheless, the environment’s energy is not generally conserved and in this work we show that this leads to non-trivial ...
Maria Popovic +2 more
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Decoherence control by quantum decoherence itself [PDF]
Scientific Reports, 2015 AbstractWe propose a general approach of protecting a two-level system against decoherence via quantum engineering of non-classical multiple superpositions of coherent states in a non-Markovian reservoir. The scheme surprisingly only uses the system-environment interaction responsible for the decoherence and projective measurements of the two-level ...
Radim Filip +3 more
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Universality of Decoherence [PDF]
Physical Review Letters, 2001 Physical Review ...
Braun, Daniel A. +2 more
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Deconstructing decoherence [PDF]
Physical Review A, 1997 13 two-column pages, 3 embedded ...
James R. Anglin +2 more
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THE DECOHERENCE CRITERION [PDF]
Modern Physics Letters B, 2001 The decoherence mechanism signals the limits beyond which the system dynamics approaches the classical behavior. We show that in some cases decoherence may also signal the limits beyond which the system dynamics has to be described by quantum field theory, rather than by quantum mechanics.
ALFINITO, ELEONORA +2 more
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Benefits of Open Quantum Systems for Quantum Machine Learning
Advanced Quantum Technologies, EarlyView., 2023 Quantum machine learning (QML), poised to transform data processing, faces challenges from environmental noise and dissipation. While traditional efforts seek to combat these hindrances, this perspective proposes harnessing them for potential advantages. Surprisingly, under certain conditions, noise and dissipation can benefit QML.
María Laura Olivera‐Atencio +2 more
wiley +1 more source