Enhancing the performance of quantum reservoir computing and solving the time-complexity problem by artificial memory restriction

Autor: Saud Čindrak, Brecht Donvil, Kathy Lüdge, Lina Jaurigue

Publikováno v: Physical Review Research, Vol 6, Iss 1, p 013051 (2024)

We propose a scheme that can enhance the performance and reduce the computational cost of quantum reservoir computing. Quantum reservoir computing is a computing approach which aims at utilizing the complexity and high dimensionality of small quantum

Externí odkaz: https://doaj.org/article/ad72ffb0f5364a3caa7d07f1cd1e21fa

Stability of invertible, frustration-free ground states against large perturbations

Autor: Sven Bachmann, Wojciech De Roeck, Brecht Donvil, Martin Fraas

Publikováno v: Quantum, Vol 6, p 793 (2022)

A gapped ground state of a quantum spin system has a natural length scale set by the gap. This length scale governs the decay of correlations. A common intuition is that this length scale also controls the spatial relaxation towards the ground state

Externí odkaz: https://doaj.org/article/3980f2b7a8324123b520789c5935cb19

Quantum trajectory framework for general time-local master equations

Autor: Brecht Donvil, Paolo Muratore Ginanneschi

Publikováno v: Nature communications. 13(1)

Master equations are one of the main avenues to study open quantum systems. When the master equation is of the Lindblad–Gorini–Kossakowski–Sudarshan form, its solution can be “unraveled in quantum trajectories” i.e., represented as an avera

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91930b4646a564a2732837f11ddc719c
https://pubmed.ncbi.nlm.nih.gov/35842427

Theoretical Study of Calorimetric Measurements in Quantum Integrated Circuits

Autor: Brecht Donvil

Publikováno v: University of Helsinki

Recent developments in experimental methods allow for the study of thermodynamic properties of quantum systems. In quantum integrated circuits, quantum systems are elements in an electric circuit that can straightforwardly be coupled to other element

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e01340f9f50b288ccf56e13dce3ef7a0
http://hdl.handle.net/10138/319285

Large deviations and fluctuation theorem for the quantum heat current in the spin-boson model

Autor: Erik Aurell, Kirone Mallick, Brecht Donvil

Publikováno v: Physical Review E
Physical Review E, American Physical Society (APS), 2020, 101 (5), pp.052116. ⟨10.1103/PhysRevE.101.052116⟩
Physical Review E, 2020, 101 (5), pp.052116. ⟨10.1103/PhysRevE.101.052116⟩

International audience; We study the heat current flowing between two baths consisting of harmonic oscillators interacting with a qubit through a spin-boson coupling. An explicit expression for the generating function of the total heat flowing betwee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c60d37d5d4f7f3d0dd6d5837533a68d
http://hdl.handle.net/10138/319671