Zobrazeno 1 - 10
of 4 347
pro vyhledávání: '"A. Chenu"'
Open quantum systems have complex energy eigenvalues which are expected to follow non-Hermitian random matrix statistics when chaotic, or 2-dimensional (2d) Poisson statistics when integrable. We investigate the spectral properties of a many-body qua
Externí odkaz:
http://arxiv.org/abs/2409.10625
We study the quantum dynamics generated by a non-Hermitian Hamiltonian subject to stochastic perturbations in its anti-Hermitian part, describing fluctuating gains and losses. The master equation governing the noise-average dynamics describes a new f
Externí odkaz:
http://arxiv.org/abs/2407.07746
Non-Hermitian dynamics in quantum systems preserves the rank of the state density operator. We use this insight to develop its geometrical description. In particular, we identify mutually orthogonal coherent and incoherent directions and give their p
Externí odkaz:
http://arxiv.org/abs/2405.13913
Demonstrations are commonly used to speed up the learning process of Deep Reinforcement Learning algorithms. To cope with the difficulty of accessing multiple demonstrations, some algorithms have been developed to learn from a single demonstration. I
Externí odkaz:
http://arxiv.org/abs/2402.09355
Publikováno v:
Phys. Rev. B 109, L140201 (2024)
Strong local disorder in interacting quantum spin chains can turn delocalized eigenmodes into localized eigenstates, giving rise to many-body localized (MBL) phases. This is accompanied by distinct spectral statistics: chaotic for the delocalized pha
Externí odkaz:
http://arxiv.org/abs/2311.16229
Correlations between the eigenenergies of a system's spectrum can be a defining feature of quantum chaos. We characterize correlations between energies for all spectral distances by studying the distributions of $k$-th neighbor level spacings ($k$nLS
Externí odkaz:
http://arxiv.org/abs/2311.09292
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033178 (2020)
Fast nonadiabatic control protocols known as shortcuts to adiabaticity have found a plethora of applications, but their use has been severely limited to speeding up the dynamics of isolated quantum systems. We introduce shortcuts for open quantum pro
Externí odkaz:
https://doaj.org/article/c02f81e9f09c4d44a0008b2766d1bd04
Autor:
Achon, Laura, De Souza, Ana, Hume, Alethia, Chenu-Abente, Ronald, De Gotzen, Amalia, Cernuzzi, Luca
SOS TUTORIA UC is a student connection application aimed at facilitating academic assistance between students through external tutoring outside of the application. To achieve this, a responsive web application was designed and implemented, integrated
Externí odkaz:
http://arxiv.org/abs/2309.10869
The intensive flow of personal data associated with the trend of computerizing aspects of people's diversity in their daily lives is associated with issues concerning not only people protection and their trust in new technologies, but also bias in th
Externí odkaz:
http://arxiv.org/abs/2306.09759
Autor:
Roccati, Federico, Bello, Miguel, Gong, Zongping, Ueda, Masahito, Ciccarello, Francesco, Chenu, Aurélia, Carollo, Angelo
Publikováno v:
Nat Commun 15, 2400 (2024)
Light can mediate effective dipole-dipole interactions between atoms or quantum emitters coupled to a common environment. Exploiting them to tailor a desired effective Hamiltonian can have major applications and advance the search for many-body phase
Externí odkaz:
http://arxiv.org/abs/2303.00762