Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Quentin, Ansel"'
Publikováno v:
SciPost Physics, Vol 16, Iss 1, p 013 (2024)
Optimal control theory is an effective tool to improve parameter estimation of quantum systems. Different methods can be employed for the design of the control protocol. They can be based either on Quantum Fischer Information (QFI) maximization or se
Externí odkaz:
https://doaj.org/article/78ebbbd0a4ec4dd5a8793568a597a40a
Publikováno v:
Physical Review A. 105
We investigate the generation of non-classical states of spins coupled to a common cavity by means of a collective driving of the spins. We propose a control strategy using specifically designed series of short coherent and squeezing pulses, which ha
We present a theoretical study of the optimal control of a qubit interacting with a structured environment. We consider a model system in which the bath is a bosonic reservoir at zero temperature and the qubit frequency is the only control parameter.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61ed8aef08d8f57b85c23ae50f9a7102
Autor:
Quentin Ansel
This paper presents a novel path integral formalism for Einstein's theory of gravitation from the viewpoint of optimal control theory. Despite its close relation to the well-known variational principles of physicists, optimal control turns out to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72916e7eb31503923337cd043a78741e
https://hal.archives-ouvertes.fr/hal-03324391
https://hal.archives-ouvertes.fr/hal-03324391
Autor:
Quentin Ansel
Publikováno v:
Gen.Rel.Grav.
Gen.Rel.Grav., 2021, 53 (4), pp.39. ⟨10.1007/s10714-021-02811-5⟩
Gen.Rel.Grav., 2021, 53 (4), pp.39. ⟨10.1007/s10714-021-02811-5⟩
International audience; In this paper, an open quantum system theory for spinfoams is developed. This new formalism aims at deriving an effective Lindblad equation to compute the reduced dynamics of a quantum gravitational field. The system parameter
Publikováno v:
Journal of Physics A: Mathematical and Theoretical
Journal of Physics A: Mathematical and Theoretical, IOP Publishing, 2021, 54 (8), pp.085204. ⟨10.1088/1751-8121/abdba1⟩
Journal of Physics A: Mathematical and Theoretical, IOP Publishing, 2021, 54 (8), pp.085204. ⟨10.1088/1751-8121/abdba1⟩
We study the selective and robust time-optimal rotation control of several spin-1/2 particles with different offset terms. For that purpose, the Pontryagin maximum principle is applied to a model of two spins, which is simple enough for analytic comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c7e76ed734636f495c76075e1019a80
http://arxiv.org/abs/2010.12454
http://arxiv.org/abs/2010.12454
Autor:
Sebastian, Probst, Vishal, Ranjan, Quentin, Ansel, Reinier, Heeres, Bartolo, Albanese, Emanuele, Albertinale, Denis, Vion, Daniel, Esteve, Steffen J, Glaser, Dominique, Sugny, Patrice, Bertet
Publikováno v:
Journal of Magnetic Resonance
Journal of Magnetic Resonance, 2019, 303, pp.42-47. ⟨10.1016/j.jmr.2019.04.008⟩
Journal of Magnetic Resonance, Elsevier, 2019, 303, pp.42-47. ⟨10.1016/j.jmr.2019.04.008⟩
Journal of Magnetic Resonance, 2019, 303, pp.42-47. ⟨10.1016/j.jmr.2019.04.008⟩
Journal of Magnetic Resonance, Elsevier, 2019, 303, pp.42-47. ⟨10.1016/j.jmr.2019.04.008⟩
International audience; In high sensitivity inductive electron spin resonance spectroscopy, superconducting microwave resonators with large quality factors are employed. While they enhance the sensitivity, they also distort considerably the shape of
We introduce the Optimal Fingerprinting Process which is aimed at accurately identifying the parameters which characterize the dynamics of a physical system. A database is first built from the time evolution of an ensemble of dynamical systems driven
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41d59f7f19c2deb9e5f21f52bdc66e26