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15 papers · 2 filters
Operator dynamics in Lindbladian SYK: a Krylov complexity perspective
Budhaditya Bhattacharjee, Pratik Nandy, Tanay Pathak
We use Krylov complexity to study operator growth in the -body dissipative SYK model, where the dissipation is modeled by linear and random -body Lindblad operators. In the l…
Entropic partial orderings of quantum measurements
Adam Teixidó-Bonfill, Joseph Schindler, Dominik Šafránek
We investigate four partial orderings on the space of quantum measurements (i.e on POVMs or positive operator valued measures), describing four notions of coarse/fine-ness of measu…
Minimal time required to charge a quantum system
Ju-Yeon Gyhm, Dario Rosa, Dominik Šafránek
We introduce a quantum charging distance as the minimal time that it takes to reach one state (charged state) from another state (depleted state) via a unitary evolution, assuming…
Observational entropy with general quantum priors
Ge Bai, Dominik Šafránek, Joseph Schindler +2
Observational entropy captures both the intrinsic uncertainty of a thermodynamic state and the lack of knowledge due to coarse-graining. We demonstrate two interpretations of obser…
Computing Quantum Mean Values in the Deep Chaotic Regime
Gabriel M. Lando, Olivier Giraud, Denis Ullmo
We study the time evolution of mean values of quantum operators in a regime plagued by two difficulties: The smallness of and the presence of strong and ubiquitous classica…
Dynamics in non-Hermitian systems with nonreciprocal coupling
Jung-Wan Ryu
We reveal that non-Hermitian Hamiltonians with nonreciprocal coupling can achieve amplification of initial states without external gain due to a kind of inherent source. We discuss…