Results 81 to 90 of about 1,675 (175)
Physical Review ResearchResearch in open quantum system dynamics has received growing interest in recent years, and its ongoing investigation has uncovered many intriguing physics departing from closed systems. A particularly useful application of the open quantum system theory
Peter L. Walters, Fei Wang
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Efficient Gaussian Simulations of Fermionic Open Quantum Systems
Advanced Quantum Technologies, Volume 9, Issue 4, April 2026.Building upon Bravyi's fundamental theoretical framework, efficient classical simulation methods are reviewed and further developed for general fermionic Gaussian processes. The emphasis remains on a unified approach applicable to generic fermionic Gaussian operations.
Yinan Fang +3 more
wiley +1 more source
Evolution Equations for Quantum Semi-Markov Dynamics
Entropy, 2020 Using a newly introduced connection between the local and non-local description of open quantum system dynamics, we investigate the relationship between these two characterisations in the case of quantum semi-Markov processes.
Nina Megier +2 more
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Advanced Quantum Technologies, Volume 9, Issue 4, April 2026.In this work an entangled photon pair generator that utilizes the biexciton–exciton cascade in semiconductor quantum dots is described on a physical, mathematical, and software level for interdisciplinary audiences, leading to Kraus operators to seamlessly incorporate it into bigger simulations.
Simon Sekavčnik +2 more
wiley +1 more source
Local Disclosure of Quantum Memory in Non-Markovian Dynamics
Physical Review LettersNon-Markovian processes may arise in physics due to memory effects of environmental degrees of freedom. For quantum non-Markovianity, it is an ongoing debate to clarify whether such memory effects have a verifiable quantum origin, or whether they might equally be modeled by a classical memory.
Charlotte Bäcker +2 more
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Advanced Quantum Technologies, Volume 9, Issue 4, April 2026.The twist angle dependence of phonon‐assisted optical absorption by moiré excitons in TMDC bilayers is studied based on a time convolutionless master equation. Small angles yield phonon‐induced absorption properties known from quantum dots or color centers reflecting non‐Markovian features, while larger angles produce absorption spectra similar to ...
Daniel Groll +4 more
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Non‐Markovian Exceptional Points in Waveguide Quantum Electrodynamics
Advanced Quantum Technologies, Volume 9, Issue 4, April 2026.Non‐Markovian waveguide‐QED systems exhibit dynamical transitions governed by exceptional points arising from retardation and interference. Giant atoms and spatially separated emitters display oscillatory relaxation and real zeros in the excited‐state amplitude at critical delay times.
Stefano Longhi
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Quantification of memory effects in topological two-band open quantum systems
HeliyonWe incorporate non-Markovian profiles and Linear Response Theory to analyze memory effects in two-band topological quantum systems. Furthermore, we have applied a measure of non-Markovianity in terms of nonlinear optical spectroscopy.
H. Triviño, F. Mesa, VA. Ballesteros
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Precursors of non-Markovianity
New Journal of Physics, 2019 Using the paradigm of information backflow to characterize a non-Markovian evolution, we introduce so-called precursors of non-Markovianity, i.e. necessary properties that the system and environment state must exhibit at earlier times in order for an ...
Steve Campbell +3 more
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Experimental investigation of geometric quantum speed limits in an open quantum system
Communications PhysicsThe quantum speed limit (QSL) is a fundamental lower bound on the evolution time for quantum systems, and its tightness has been observed to be dependent on the properties of the physical process.
Diego Paiva Pires +4 more
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