Relaxation breakdown and resonant tunneling in ultrastrong-coupling cavity QED

D De Bernardis - Physical Review A, 2023 - APS
We study the open relaxation dynamics of an asymmetric dipole that is ultrastrongly coupled
to a single electromagnetic cavity mode. By using a thermalizing master equation for the …

Squeezed-light-induced quantum phase transition in the Jaynes-Cummings model

LT Shen, CQ Tang, Z Shi, H Wu, ZB Yang, SB Zheng - Physical Review A, 2022 - APS
Quantum phase transition and quench dynamics in the Jaynes-Cummings model with
squeezed light are investigated. We find a special unitary transformation that removes the …

Multiphoton resonance band and Bloch–Siegert shift in a bichromatically driven qubit

Y Yan, Z Lü, L Chen, H Zheng - Advanced Quantum …, 2023 - Wiley Online Library
The resonance and dynamics of a qubit exposed to a strong aperiodic bichromatic field are
studied by using a periodic counter‐rotating hybridized rotating wave (CHRW) Hamiltonian …

Tuning nonequilibrium heat current and two-photon statistics via composite qubit-resonator interaction

ZH Chen, HX Che, ZK Chen, C Wang, J Ren - Physical Review Research, 2022 - APS
Quantum thermal transport and two-photon statistics serve as two representative
nonequilibrium features in circuit quantum electrodynamics (cQED) systems. Here we …

Dispersive readout with non-Markovian environments

HZ Shen, Q Wang, XX Yi - Physical Review A, 2022 - APS
We study the non-Markovian dispersive readout of a single-mode bosonic (SMB) quantum
system coupled to the open cavity with two non-Markovian environments. Assuming that the …

Unified diagrammatic approach to quantum transport in few-level junctions for bosonic and fermionic reservoirs: Application to the quantum Rabi model

L Magazzù, E Paladino, M Grifoni - Physical Review B, 2024 - APS
We apply the Nakajima-Zwanzig approach to open quantum systems to study steady-state
transport across generic multilevel junctions coupled to bosonic or fermionic reservoirs. The …

GHZ-like states in the Qubit-Qudit Rabi model

Y Shen, G Marchegiani, G Catelani, L Amico, AQ Liu… - SciPost Physics, 2021 - scipost.org
We study a Rabi type Hamiltonian system in which a qubit and a d-level quantum system
(qudit) are coupled through a common resonator. In the weak and strong coupling limits the …

A unified diagrammatic approach in Liouville space to quantum transport for bosonic and fermionic reservoirs

L Magazzù, E Paladino, M Grifoni - arXiv preprint arXiv:2403.06923, 2024 - arxiv.org
We present a diagrammatic approach to quantum transport based on a master equation
formalism in Liouville space. It can be applied to linear and nonlinear transport in generic …

Heat transport in the quantum Rabi model: Universality and ultrastrong coupling effects

L Magazzu, E Paladino, M Grifoni - arXiv preprint arXiv:2403.06909, 2024 - arxiv.org
Heat transport in the quantum Rabi model at weak interaction with the heat baths is
controlled by the qubit-oscillator coupling. Universality of the linear conductance versus the …