The hierarchy of Davydov's Ansätze and its applications

Y Zhao, K Sun, L Chen, M Gelin - Wiley Interdisciplinary …, 2022 - Wiley Online Library
This review provides a bird's eye view over the development of the hierarchy of Davydov's
Ansätze and its applications in a variety of problems in computational physical chemistry …

The hierarchy of Davydov's Ansätze: From guesswork to numerically “exact” many-body wave functions

Y Zhao - The Journal of Chemical Physics, 2023 - pubs.aip.org
This Perspective presents an overview of the development of the hierarchy of Davydov's
Ansätze and a few of their applications in many-body problems in computational chemical …

Digital quantum simulation of many-body non-Markovian dynamics

R Sweke, M Sanz, I Sinayskiy, F Petruccione, E Solano - Physical Review A, 2016 - APS
We present an algorithmic method for the digital quantum simulation of many-body locally
indivisible non-Markovian open quantum systems. It consists of two parts: first, a Suzuki-Lie …

Entangling polaritons via dynamical Casimir effect in circuit quantum electrodynamics

DZ Rossatto, S Felicetti, H Eneriz, E Rico, M Sanz… - Physical Review B, 2016 - APS
We investigate theoretically how the dynamical Casimir effect can entangle quantum
systems in different coupling regimes of circuit quantum electrodynamics, and show the …

Enabling quantum non-Markovian dynamics by injection of classical colored noise

JI Costa-Filho, RBB Lima, RR Paiva, PM Soares… - Physical Review A, 2017 - APS
The non-Markovian nature of quantum systems recently turned to be a key subject for
investigations on open quantum system dynamics. Many studies, from its theoretical …

Symmetry and the critical phase of the two-bath spin-boson model: Ground-state properties

N Zhou, L Chen, D Xu, V Chernyak, Y Zhao - Physical Review B, 2015 - APS
A generalized trial wave function termed as the “multi-D 1 ansatz” has been developed to
study the ground state of the spin-boson model with simultaneous diagonal and off-diagonal …

Noise suppression via generalized-Markovian processes

J Marshall, L Campos Venuti, P Zanardi - Physical Review A, 2017 - APS
It is by now well established that noise itself can be useful for performing quantum
information processing tasks. We present results which show how one can effectively reduce …

Enhancing quantum transport efficiency by tuning non-Markovian dephasing

SV Moreira, B Marques, RR Paiva, LS Cruz… - Physical Review A, 2020 - APS
We consider the problem of energy transport in a chain of coupled dissipative quantum
systems in the presence of non-Markovian dephasing. We use a model of non-Markovianity …

Quantum speedup of an atom coupled to a photonic-band-gap reservoir

YN Wu, J Wang, HZ Zhang - Quantum Information Processing, 2017 - Springer
For a model of an atom embedded in a photonic-band-gap reservoir, it was found that the
speedup of quantum evolution is subject to the atomic frequency changes. In this work, we …

Coupled modes locally interacting with qubits: Critical assessment of the rotating-wave approximation

PC Cárdenas, WS Teixeira, FL Semião - Physical Review A, 2017 - APS
The interaction of qubits with quantized modes of electromagnetic fields has been largely
addressed in the quantum optics literature under the rotating wave approximation (RWA) …