111 citations · 467 across the 17 of their papers we have counts for
4 papers · 2 filters
Time correlation functions for non-Hermitian quantum systems
Alessandro Sergi, Konstantin G. Zloshchastiev
We introduce a formalism for time-dependent correlation functions for systems whose evolutions are governed by non-Hermitian Hamiltonians of general type. It turns out that one can…
Non-Hamiltonian modeling of squeezing and thermal disorder in driven oscillators
Sashwin Sewran, Konstantin G. Zloshchastiev, Alessandro Sergi
Recently, model systems with quadratic Hamiltonians and time-dependent interactions were studied by Briegel and Popescu and by Galve et al. in order to consider the possibility of…
Comparison and unification of non-Hermitian and Lindblad approaches with applications to open quantum optical systems
Konstantin G. Zloshchastiev, Alessandro Sergi
We compare two approaches to open quantum systems, namely, the non-Hermitian dynamics and the Lindblad master equation. In order to deal with more general dissipative phenomena, we…
Computer Simulation of Quantum Dynamics in a Classical Spin Environment
Alessandro Sergi
In this paper a formalism for studying the dynamics of quantum systems coupled to classical spin environments is reviewed. The theory is based on generalized antisymmetric brackets…