Zobrazeno 1 - 10
of 8 801
pro vyhledávání: '"A. Guéry"'
Publikováno v:
Entropy 25, 1256 (2023)
We discuss the emulation of non-Hermitian dynamics during a given time window by a low-dimensional quantum system coupled to a finite set of equidistant discrete states acting as an effective continuum. We first emulate the decay of an unstable state
Externí odkaz:
http://arxiv.org/abs/2502.02507
Capacitors are ubiquitous in electronic and electrical devices. In this article, we study -- both theoretically and experimentally -- the charging and discharging of capacitors using active control of a voltage source. The energy of these processes i
Externí odkaz:
http://arxiv.org/abs/2501.12028
Autor:
Impens, F., Guéry-Odelin, D.
We present a geometric optimization method for implementing quantum gates by optimally controlling the Hamiltonian parameters, aiming to approach the Mandelstam-Tamm Quantum Speed Limit (MT-QSL). Achieving this bound requires satisfying precise geome
Externí odkaz:
http://arxiv.org/abs/2501.05330
Publikováno v:
Frontiers in quantum science and technology 4, 1540695 (2025)
We numerically study the optimal control of an atomic Bose-Einstein condensate in an optical lattice. We present two generalizations of the gradient-based algorithm, GRAPE, in the non-linear case and for a two-dimensional lattice. We show how to cons
Externí odkaz:
http://arxiv.org/abs/2412.05170
The dynamics of a system composed of elastic hard particles confined by an isotropic harmonic potential are studied. In the low-density limit, the Boltzmann equation provides an excellent description, and the system does not reach equilibrium except
Externí odkaz:
http://arxiv.org/abs/2409.07831
Publikováno v:
Chaos 34, 103146 (2024)
In the absence of external forcing, all trajectories on the phase plane of the van der Pol oscillator tend to a closed, periodic, trajectory -- the limit cycle -- after infinite time. Here, we drive the van der Pol oscillator with an external time-de
Externí odkaz:
http://arxiv.org/abs/2407.03435
Autor:
Rodzinka, T., Dionis, E., Calmels, L., Beldjoudi, S., Béguin, A., Guéry-Odelin, D., Allard, B., Sugny, D., Gauguet, A.
Publikováno v:
Nat Commun 15, 10281 (2024)
The effective control of atomic coherence with cold atoms has made atom interferometry an essential tool for quantum sensors and precision measurements. The performance of these interferometers is closely related to the operation of large wave packet
Externí odkaz:
http://arxiv.org/abs/2403.14337
Autor:
Murzyn, Kevin, van der Geest, Maarten L. S., Guery, Leo, Nie, Zhonghui, van Essen, Pieter, Witte, Stefan, Kraus, Peter M.
Nonlinear optical microscopy provides elegant means for label-free imaging of biological samples and condensed matter systems. The widespread areas of application could even be increased if resolution was improved, which is currently limited by the f
Externí odkaz:
http://arxiv.org/abs/2403.06617
Publikováno v:
J. Phys. B 57, 133001 (2024)
Quantum optimal control is a set of methods for designing time-varying electromagnetic fields to perform operations in quantum technologies. This tutorial paper introduces the basic elements of this theory based on the Pontryagin maximum principle, i
Externí odkaz:
http://arxiv.org/abs/2403.00532
Publikováno v:
Phys. Rev. Lett. 132, 027101 (2024)
Boltzmann showed that in spite of momentum and energy redistribution through collisions, a rarefied gas confined in a isotropic harmonic trapping potential does not reach equilibrium; it evolves instead into a breathing mode where density, velocity a
Externí odkaz:
http://arxiv.org/abs/2312.09726