Maximum Entropy Principle in Deep Thermalization and in Hilbert-Space Ergodicity
We report universal statistical properties displayed by ensembles of pure states that
naturally emerge in quantum many-body systems. Specifically, two classes of state …
naturally emerge in quantum many-body systems. Specifically, two classes of state …
Probing postmeasurement entanglement without postselection
We study the problem of observing quantum collective phenomena emerging from large
numbers of measurements. These phenomena are difficult to observe in conventional …
numbers of measurements. These phenomena are difficult to observe in conventional …
Unified theory of local quantum many-body dynamics: Eigenoperator thermalization theorems
B Buča - Physical Review X, 2023 - APS
Explaining quantum many-body dynamics is a long-held goal of physics. A rigorous operator
algebraic theory of dynamics in locally interacting systems in any dimension is provided …
algebraic theory of dynamics in locally interacting systems in any dimension is provided …
Hilbert-space ergodicity in driven quantum systems: Obstructions and designs
Despite its long history, a canonical formulation of quantum ergodicity that applies to general
classes of quantum dynamics, including driven systems, has not been fully established …
classes of quantum dynamics, including driven systems, has not been fully established …
Quantum Information Spreading in Generalized Dual-Unitary Circuits
We study the spreading of quantum information in a recently introduced family of brickwork
quantum circuits that generalizes the dual-unitary class. These circuits are unitary in time …
quantum circuits that generalizes the dual-unitary class. These circuits are unitary in time …
Solvable model of deep thermalization with distinct design times
We study the emergence over time of a universal, uniform distribution of quantum states
supported on a finite subsystem, induced by projectively measuring the rest of the system …
supported on a finite subsystem, induced by projectively measuring the rest of the system …
Complete Hilbert-space ergodicity in quantum dynamics of generalized Fibonacci drives
Ergodicity of quantum dynamics is often defined through statistical properties of energy
eigenstates, as exemplified by Berry's conjecture in single-particle quantum chaos and the …
eigenstates, as exemplified by Berry's conjecture in single-particle quantum chaos and the …
Hierarchical generalization of dual unitarity
Quantum dynamics with local interactions in lattice models display rich physics, but is
notoriously hard to study. Dual-unitary circuits allow for exact answers to interesting physical …
notoriously hard to study. Dual-unitary circuits allow for exact answers to interesting physical …
From dual unitarity to generic quantum operator spreading
Dual-unitary circuits are paradigmatic examples of exactly solvable yet chaotic quantum
many-body systems, but solvability naturally goes along with a degree of nongeneric …
many-body systems, but solvability naturally goes along with a degree of nongeneric …
Exact thermal eigenstates of nonintegrable spin chains at infinite temperature
Y Chiba, Y Yoneta - Physical Review Letters, 2024 - APS
The eigenstate thermalization hypothesis (ETH) plays a major role in explaining
thermalization of isolated quantum many-body systems. However, there has been no proof …
thermalization of isolated quantum many-body systems. However, there has been no proof …