Dissipative two-level system under strong ac driving: A combination of Floquet and Van Vleck perturbation theory

J Hausinger, M Grifoni - Physical Review A—Atomic, Molecular, and Optical …, 2010 - APS
We study the dissipative dynamics of a two-level system (TLS) exposed to strong ac driving.
By combining Floquet theory with Van Vleck perturbation theory in the TLS tunneling matrix …

Dynamics and quantum Zeno effect for a qubit in either a low-or high-frequency bath beyond the rotating-wave approximation

X Cao, JQ You, H Zheng, AG Kofman, F Nori - Physical Review A—Atomic …, 2010 - APS
We use a non-Markovian approach to study the decoherence dynamics of a qubit in either a
low-or high-frequency bath modeling the qubit environment. This is done for two separate …

Non-Markovian reduced dynamics based upon a hierarchical effective-mode representation

I Burghardt, R Martinazzo, KH Hughes - The Journal of chemical …, 2012 - pubs.aip.org
A reduced dynamics representation is introduced which is tailored to a hierarchical, Mori-
chain type representation of a bath of harmonic oscillators which are linearly coupled to a …

Quantum dynamics in a tiered non-Markovian environment

A Fruchtman, BW Lovett, SC Benjamin… - New Journal of …, 2015 - iopscience.iop.org
We introduce a new analytical method for studying the open quantum systems problem of a
discrete system weakly coupled to an environment of harmonic oscillators. Our approach is …

Quantum Models of Consciousness from a Quantum Information Science Perspective

L Gassab, O Pusuluk, M Cattaneo… - arxiv preprint arxiv …, 2024 - arxiv.org
This perspective explores various quantum models of consciousness from the viewpoint of
quantum information science, offering potential ideas and insights. The models under …

Quantum coherence of spin-boson model at finite temperature

W Wu, JB Xu - Annals of Physics, 2017 - Elsevier
We investigate the dynamical behavior of quantum coherence in spin-boson model, which
consists of a qubit coupled to a finite-temperature bosonic bath with power-law spectral …

Beyond the Born-Markov approximation: Dissipative dynamics of a single qubit

LM Cangemi, G Passarelli, V Cataudella, P Lucignano… - Physical Review B, 2018 - APS
We propose a numerical technique based on a combination of short-iterative Lanczos and
exact diagonalization methods, suitable for simulating the time evolution of the reduced …

Effect of bath temperature on the decoherence of quantum dissipative systems

W Wu, HQ Lin - Physical Review A, 2016 - APS
We report an anomalous decoherence phenomenon of a quantum dissipative system in the
framework of a stochastic decoupling scheme along with a hierarchical equations-of-motion …

Non-Markovian dynamics of a biased qubit coupled to a structured bath

C Gan, P Huang, H Zheng - Journal of Physics: Condensed …, 2010 - iopscience.iop.org
A new analytical approach, beyond the rotating wave approximation, based on unitary
transformations and the non-Markovian master equation for the density operator, is applied …

Effect of bath temperature on the quantum decoherence

P Huang, H Zheng - Chemical Physics Letters, 2010 - Elsevier
The dynamics of a qubit in two different environments are investigated theoretically. The first
environment is a two level system coupled to a bosonic bath. And the second one is a …