Probing postmeasurement entanglement without postselection
SJ Garratt, E Altman - PRX Quantum, 2024 - APS
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 …
Solvable model of deep thermalization with distinct design times
M Ippoliti, WW Ho - Quantum, 2022 - quantum-journal.org
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 …
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 …
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 …
Shadow tomography from emergent state designs in analog quantum simulators
M McGinley, M Fava - Physical Review Letters, 2023 - APS
We introduce a method that allows one to infer many properties of a quantum state—
including nonlinear functions such as Rényi entropies—using only global control over the …
including nonlinear functions such as Rényi entropies—using only global control over the …
Deep thermalization in constrained quantum systems
The concept of “deep thermalization” has recently been introduced to characterize moments
of an ensemble of pure states, resulting from projective measurements on a subsystem …
of an ensemble of pure states, resulting from projective measurements on a subsystem …
Exact dynamics in dual-unitary quantum circuits with projective measurements
Dual-unitary circuits have emerged as a minimal model for chaotic quantum many-body
dynamics in which the dynamics of correlations and entanglement remains tractable …
dynamics in which the dynamics of correlations and entanglement remains tractable …