Universal fidelity reduction of quantum operations from weak dissipation

T Abad, J Fernández-Pendás, A Frisk Kockum… - Physical Review Letters, 2022 - APS
Quantum information processing is in real systems often limited by dissipation, stemming
from remaining uncontrolled interaction with microscopic degrees of freedom. Given recent …

Open-quantum-system dynamics: Recovering positivity of the Redfield equation via the partial secular approximation

D Farina, V Giovannetti - Physical Review A, 2019 - APS
We show how to recover complete positivity (and hence positivity) of the Redfield equation
via a coarse-grained averaging technique. We derive general bounds for the coarse …

Bloch-Redfield equations for modeling light-harvesting complexes

J Jeske, J David, MB Plenio, SF Huelga… - The Journal of chemical …, 2015 - pubs.aip.org
We challenge the misconception that Bloch-Redfield equations are a less powerful tool than
phenomenological Lindblad equations for modeling exciton transport in photosynthetic …

Coherent multidimensional spectroscopy in polariton systems

D Gallego-Valencia, L Mewes, J Feist, JL Sanz-Vicario - Physical Review A, 2024 - APS
The fast dynamics of molecular polaritonics is scrutinized theoretically through the
implementation of two-dimensional spectroscopy protocols. We derive conceptually simple …

On the mechanism of polaritonic rate suppression from quantum transition paths

MC Anderson, EJ Woods, TP Fay… - The Journal of …, 2023 - ACS Publications
Polariton chemistry holds promise for facilitating mode-selective chemical reactions, but the
underlying mechanism behind the rate modifications observed under strong vibrational …

Phonon coupling versus pure dephasing in the photon statistics of cooperative emitters

J Wiercinski, EM Gauger, M Cygorek - Physical Review Research, 2023 - APS
Realizing scalable quantum networks requires a meticulous level of understanding and
mitigating the deleterious effects of decoherence. Many quantum device platforms feature …

Microscopic description for the emergence of collective dissipation in extended quantum systems

F Galve, A Mandarino, MGA Paris, C Benedetti… - Scientific Reports, 2017 - nature.com
Practical implementations of quantum technology are limited by unavoidable effects of
decoherence and dissipation. With achieved experimental control for individual atoms and …

Quantum metrology subject to spatially correlated Markovian noise: restoring the Heisenberg limit

J Jeske, JH Cole, SF Huelga - New Journal of Physics, 2014 - iopscience.iop.org
Environmental noise can hinder the metrological capabilities of entangled states. While the
use of entanglement allows for Heisenberg-limited resolution, the largest permitted by …

Noisy spins and the Richardson-Gaudin model

DA Rowlands, A Lamacraft - Physical review letters, 2018 - APS
We study a system of spins (qubits) coupled to a common noisy environment, each
precessing at its own frequency. The correlated noise experienced by the spins implies long …

Collective photon emission in solid state environments: Concatenating non-Markovian and Markovian dynamics

D Pandey, M Wubs - Physical Review Research, 2024 - APS
Collective light emission and multiqubit dynamics of solid-state quantum emitters are
affected both by their coupling to the light field and to lattice vibrations. The effect of phonons …