Making quantum collision models exact
Sign Up to like & getrecommendations! Published in 2024 at "Communications Physics"
DOI: 10.1038/s42005-025-02201-2
Abstract: Quantum collision models describe open quantum systems through repeated interactions with a coarse-grained environment. However, a complete certification of these models is lacking, as no complete error bounds on the simulation of system observables have… read more here.
Keywords: quantum collision; non markovian; collision; collision models ... See more keywords
Non-Markovianity in collision models with initial intra-environment correlations
Sign Up to like & getrecommendations! Published in 2025 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ae1b31
Abstract: Collision models (CMs) describe an open system interacting in sequence with elements of an environment, termed ancillas. They have been established as a useful tool for analyzing non-Markovian open quantum dynamics based on the ability… read more here.
Keywords: system; environment; non markovianity; collision models ... See more keywords
Strong symmetries in collision models and physical dilations of covariant quantum maps
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DOI: 10.1103/physreva.111.022209
Abstract: Quantum maps are fundamental to quantum information theory and open quantum systems. Covariant or weakly symmetric quantum maps, in particular, play a key role in defining quantum evolutions that respect thermodynamics, establish free operations in… read more here.
Keywords: quantum maps; collision models; strong symmetries; physical dilations ... See more keywords
Composite quantum collision models
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DOI: 10.1103/physreva.96.032107
Abstract: A collision model (CM) is a framework to describe open quantum dynamics. In its {\it memoryless} version, it models the reservoir $\mathcal R$ as consisting of a large collection of elementary ancillas: the dynamics of… read more here.
Keywords: quantum collision; collision; composite quantum; collision models ... See more keywords
Temperature effects on quantum non-Markovianity via collision models
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.97.062104
Abstract: Quantum non-Markovianity represents memory during the system dynamics, which is typically weakened by the temperature. We here study the effects of environmental temperature on the non-Markovianity of an open quantum system by virtue of collision… read more here.
Keywords: non markovianity; system; temperature; collision models ... See more keywords
Comprehensive comparison of collision models in the lattice Boltzmann framework: Theoretical investigations.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review. E"
DOI: 10.1103/physreve.100.033305
Abstract: Over the last decades, several types of collision models have been proposed to extend the validity domain of the lattice Boltzmann method (LBM), each of them being introduced in its own formalism. This article proposes… read more here.
Keywords: collision; lattice boltzmann; moment; comprehensive comparison ... See more keywords
Quantum Collision Models: A Beginner Guide
Sign Up to like & getrecommendations! Published in 2022 at "Entropy"
DOI: 10.3390/e24091258
Abstract: In recent years, quantum collision models, sometimes dubbed repeated interaction models, have gained much attention due to their simplicity and their capacity to convey ideas without resorting to technical complications typical of many approaches and… read more here.
Keywords: models beginner; beginner guide; collision; quantum collision ... See more keywords