From dual-unitary to quantum Bernoulli circuits: Role of the entangling power in constructing a quantum ergodic hierarchy
Deterministic classical dynamical systems have an ergodic hierarchy, from ergodic through
mixing, to Bernoulli systems that are “as random as a coin toss.” Dual-unitary circuits have …
mixing, to Bernoulli systems that are “as random as a coin toss.” Dual-unitary circuits have …
Scrambling in strongly chaotic weakly coupled bipartite systems: Universality beyond the Ehrenfest timescale
Out-of-time-order correlators (OTOCs), vigorously being explored as a measure of quantum
chaos and information scrambling, is studied here in the natural and simplest multiparticle …
chaos and information scrambling, is studied here in the natural and simplest multiparticle …
Dual unitaries as maximizers of the distance to local product gates
The problem of finding the resource-free, closest local unitary, to any bipartite unitary gate U
is addressed. Previously discussed as a measure of nonlocality, the distance KD (U) to the …
is addressed. Previously discussed as a measure of nonlocality, the distance KD (U) to the …
Coherifying quantum channels
Is it always possible to explain random stochastic transitions between states of a finite-
dimensional system as arising from the deterministic quantum evolution of the system? If not …
dimensional system as arising from the deterministic quantum evolution of the system? If not …
Quantum coherence controls the nature of equilibration and thermalization in coupled chaotic systems
A bipartite system whose subsystems are fully quantum chaotic and coupled by a
perturbative interaction with a tunable strength is a paradigmatic model for investigating how …
perturbative interaction with a tunable strength is a paradigmatic model for investigating how …
Maximal coherence in a generic basis
Y Yao, GH Dong, L Ge, M Li, CP Sun - Physical Review A, 2016 - APS
Since quantum coherence is an undoubted characteristic trait of quantum physics, the
quantification and application of quantum coherence has been one of the long-standing …
quantification and application of quantum coherence has been one of the long-standing …
Eigenstate entanglement between quantum chaotic subsystems: Universal transitions and power laws in the entanglement spectrum
We derive universal entanglement entropy and Schmidt eigenvalue behaviors for the
eigenstates of two quantum chaotic systems coupled with a weak interaction. The …
eigenstates of two quantum chaotic systems coupled with a weak interaction. The …
Entanglement measures of bipartite quantum gates and their thermalization under arbitrary interaction strength
Entanglement properties of bipartite unitary operators are studied via their local invariants,
namely the entangling power ep and a complementary quantity, the gate typicality gt. We …
namely the entangling power ep and a complementary quantity, the gate typicality gt. We …
Entanglement in a dephasing model and many-body localization
M Žnidarič - Physical Review B, 2018 - APS
We study entanglement dynamics in a diagonal dephasing model in which the strength of
interaction decays exponentially with distance—the so-called l-bit model of many-body …
interaction decays exponentially with distance—the so-called l-bit model of many-body …