122 citations · 809 across the 30 of their papers we have counts for
31 papers
Gaussian Scrooge Ensemble from Deep Thermalization in Free-Fermions
Angelo Russotto, Katja Klobas, Pasquale Calabrese +1
Deep thermalization indicates the emergence of universal ensembles of pure states in a subsystem after measuring its environment. We investigate this phenomenon in a free-fermion c…
Dynamical correlation functions of extensive charges after global quantum quenches
Riccardo Travaglino, Katja Klobas, Bruno Bertini +1
We investigate the -time cumulant generating function (or -Full Counting Statistics, -FCS) of extensive charges following a quantum quench. Exploiting space-time du…
Exact subsystem dynamics in the deterministic Floquet-PXP model
Katja Klobas
The dynamics of local subsystems in a thermodynamically large quantum many-body system can be understood as effectively open as the system produces its own effective bath. The acti…
Space-time duality approach to (inhomogeneous) integrable quenches
Riccardo Travaglino, Pasquale Calabrese, Katja Klobas +1
Characterising the universal aspects of non-equilibrium quantum many-body dynamics is one of the key goals of this century's physics research. Progress, however, is hindered by the…
Athermality of generalized Gibbs ensembles
Riccardo Senese, Bruno Bertini, Katja Klobas +1
Integrable quantum systems evolving from non-equilibrium initial states do not thermalize to conventional Gibbs ensembles (GE). Instead, at long times they relax to generalized Gib…
Low Rank Structure of the Reduced Transition Matrix
Cathy Li, Bruno Bertini, Katja Klobas +1
The influence-matrix formalism provides an alternative route to the classical simulation of quantum dynamics. Because influence matrices retain information only about the effective…
Initial State Memory in Finite Random Brickwork Circuits
Jakob Bannister, Katja Klobas, Colin Rylands +1
We ask under what conditions a finite brickwork circuit of random gates retains local information about the initial state. To answer this question we measure the averaged Frobenius…
Random Permutation Circuits Beyond Qubits are Quantum Chaotic
Bruno Bertini, Katja Klobas, Pavel Kos +1
Random permutation circuits were recently introduced as minimal models for local many-body dynamics that can be interpreted both as classical and quantum. Standard dynamical comple…
Entanglement dynamics and Page curves in random permutation circuits
Dávid Szász-Schagrin, Michele Mazzoni, Bruno Bertini +2
The characterization of ensembles of many-qubit random states and their realization via quantum circuits are crucial tasks in quantum-information theory. In this work, we study the…
Quantum State Designs from Minimally Random Quantum Circuits
Jonathon Riddell, Katja Klobas, Bruno Bertini
Random many-body states are both a useful tool to model certain physical systems and an important asset for quantum computation. Realising them, however, generally requires an expo…
Fluctuations of stochastic charged cellular automata
Žiga Krajnik, Katja Klobas, Bruno Bertini +1
We obtain the exact full counting statistics of a cellular automaton with freely propagating vacancies and charged particles that are stochastically scattered or transmitted upon c…
Non-equilibrium dynamics of symmetry-resolved entanglement and entanglement asymmetry: Exact asymptotics in Rule 54
Katja Klobas
Symmetry resolved entanglement and entanglement asymmetry are two measures of quantum correlations sensitive to symmetries of the system. Here we discuss their non-equilibrium dyna…
Quantum and Classical Dynamics with Random Permutation Circuits
Bruno Bertini, Katja Klobas, Pavel Kos +1
Understanding thermalisation in quantum many-body systems is among the most enduring problems in modern physics. A particularly interesting question concerns the role played by qua…
Exact results on the dynamics of the stochastic Floquet-East model
Cecilia De Fazio, Juan P. Garrahan, Katja Klobas
We introduce a stochastic generalisation of the classical deterministic Floquet-East model, a discrete circuit with the same kinetic constraint as the East model of glasses. We pro…
Translation symmetry restoration under random unitary dynamics
Katja Klobas, Colin Rylands, Bruno Bertini
The finite parts of a large, locally interacting many-body system prepared out-of-equilibrium eventually equilibrate. Characterising the underlying mechanisms of this process and i…
Exact quench dynamics of the Floquet quantum East model at the deterministic point
Bruno Bertini, Cecilia De Fazio, Juan P. Garrahan +1
We study the nonequilibrium dynamics of the Floquet quantum East model (a Trotterized version of the kinetically constrained quantum East spin chain) at its "deterministic point",…
Microscopic origin of the quantum Mpemba effect in integrable systems
Colin Rylands, Katja Klobas, Filiberto Ares +3
The highly complicated nature of far from equilibrium systems can lead to a complete breakdown of the physical intuition developed in equilibrium. A famous example of this is the M…
Dynamics of charge fluctuations from asymmetric initial states
Bruno Bertini, Katja Klobas, Mario Collura +2
Conserved-charge densities are very special observables in quantum many-body systems as, by construction, they encode information about the dynamics. Therefore, their evolution is…
Exact pre-transition effects in kinetically constrained circuits: dynamical fluctuations in the Floquet-East model
Katja Klobas, Cecilia De Fazio, Juan P. Garrahan
We study the dynamics of a classical circuit corresponding to a discrete-time kinetically constrained East model. We show that this classical "Floquet-East" model displays pre-tran…
Nonequilibrium Full Counting Statistics and Symmetry-Resolved Entanglement from Space-Time Duality
Bruno Bertini, Pasquale Calabrese, Mario Collura +2
Due to its probabilistic nature, a measurement process in quantum mechanics produces a distribution of possible outcomes. This distribution - or its Fourier transform known as full…
Stochastic strong zero modes and their dynamical manifestations
Katja Klobas, Paul Fendley, Juan P. Garrahan
Strong zero modes (SZMs) are conserved operators localised at the edges of certain quantum spin chains, which give rise to long coherence times of edge spins. Here we define and an…
Growth of Rényi Entropies in Interacting Integrable Models and the Breakdown of the Quasiparticle Picture
Bruno Bertini, Katja Klobas, Vincenzo Alba +2
Rényi entropies are conceptually valuable and experimentally relevant generalisations of the celebrated von Neumann entanglement entropy. After a quantum quench in a clean quantum…
Entanglement Negativity and Mutual Information after a Quantum Quench: Exact Link from Space-Time Duality
Bruno Bertini, Katja Klobas, Tsung-Cheng Lu
We study the growth of entanglement between two adjacent regions in a tripartite, one-dimensional many-body system after a quantum quench. Combining a replica trick with a space-ti…
On two reversible cellular automata with two particle species
Katja Klobas, Tomaž Prosen
We introduce a pair of time-reversible models defined on the discrete space-time lattice with 3 states per site, specifically, a vacancy and a particle of two flavours (species). T…