Generating random quantum channels

R Kukulski, I Nechita, Ł Pawela, Z Puchała… - Journal of …, 2021 - pubs.aip.org
Several techniques of generating random quantum channels, which act on the set of d-
dimensional quantum states, are investigated. We present three approaches to the problem …

Distinguishing between quantum and classical Markovian dephasing dissipation

A Seif, YX Wang, AA Clerk - Physical Review Letters, 2022 - APS
Understanding whether dissipation in an open quantum system is truly quantum is a
question of both fundamental and practical interest. We consider n qubits subject to …

Two-qubit quantum probes for the temperature of an Ohmic environment

F Gebbia, C Benedetti, F Benatti, R Floreanini, M Bina… - Physical Review A, 2020 - APS
We address a particular instance where open quantum systems may be used as quantum
probes for an emergent property of a complex system, as the temperature of a thermal bath …

On Markovianity and classicality in multilevel spin–boson models

D Chruściński, S Hesabi, D Lonigro - Scientific Reports, 2023 - nature.com
We provide a detailed discussion about the unitary and reduced evolution induced by family
of Hamiltonian models describing a multilevel system, with a ground state and a possibly …

Decoherence without entanglement and quantum Darwinism

G García-Pérez, DA Chisholm, MAC Rossi… - Physical Review …, 2020 - APS
It is often assumed that decoherence arises as a result of the entangling interaction between
a quantum system and its environment, as a consequence of which the environment …

Quantum-classical decomposition of Gaussian quantum environments: A stochastic pseudomode model

S Luo, N Lambert, P Liang, M Cirio - PRX Quantum, 2023 - APS
We show that the effect of a Gaussian bosonic environment linearly coupled to a quantum
system can be simulated by a stochastic Lindblad master equation characterized by a set of …

Quantum classical approach to spin and charge pumping and the ensuing radiation in terahertz spintronics: Example of the ultrafast light-driven Weyl antiferromagnet …

A Suresh, BK Nikolić - Physical Review B, 2023 - APS
The interaction of a femtosecond laser pulse with magnetic materials has been intensely
studied for more than two decades in order to understand ultrafast demagnetization in single …

Noise representations of open system dynamics

P Szańkowski, Ł Cywiński - Scientific Reports, 2020 - nature.com
We analyze the conditions under which the dynamics of a quantum system open to a given
environment can be simulated with an external noisy field that is a surrogate for the …

Quantum-to-classical transition via quantum cellular automata

PCS Costa - Quantum Information Processing, 2021 - Springer
A quantum cellular automaton (QCA) is an abstract model consisting of an array of finite-
dimensional quantum systems that evolves in discrete time by local unitary operations. Here …

On the classicality of quantum dephasing processes

D Lonigro, D Chruściński - Frontiers in Quantum Science and …, 2022 - frontiersin.org
We analyze the multitime statistics associated with pure dephasing systems repeatedly
probed with sharp measurements, and search for measurement protocols whose statistics …