8 papers
Extracting the physical content of Liouvillian eigenmodes: Semiclassical quantization
Ashlin V Thomas, Felix Fritzsch, Masudul Haque +1
Unlike in closed quantum systems where individual energy eigenstates are understood as physical excitations, open quantum systems have distinct right and left eigenstates of the Li…
Semiclassical foundation of universality in chaotic quantum circuits
Maximilian F. I. Kieler, Felix Fritzsch, Arnd Bäcker
The fundamental correspondence between quantum chaotic single-particle systems and random matrix theory is well-understood via periodic orbit theory. In contrast, we show that many…
Timescales for Deep and Full Thermalization
Tabea Herrmann, Felix Fritzsch, Arnd Bäcker
Isolated quantum systems typically approach thermal equilibrium as described by the Eigenstate Thermalization Hypothesis (ETH). Going beyond this involves either higher order corre…
Probes of Full Eigenstate Thermalization in Ergodicity-Breaking Quantum Circuits
Gabriel O. Alves, Felix Fritzsch, Pieter W. Claeys
The eigenstate thermalization hypothesis (ETH) is the leading interpretation in our current understanding of quantum thermalization. Recent results uncovered strong connections bet…
Free Cumulants and Full Eigenstate Thermalization from Boundary Scrambling
Felix Fritzsch, Gabriel O. Alves, Michael A. Rampp +1
Out-of-time-order correlation functions (OTOCs) and their higher-order generalizations present important probes of quantum information dynamics and scrambling. We introduce a solva…
Sampling Continuous Quantum Dynamics from a Single Static State
Sebastian Gemsheim, Felix Fritzsch
While quantum simulation is one of the most promising applications of modern quantum devices, accessible simulation times are fundamentally limited by finite coherence times due to…