6 papers · 1 filter
Topological enhancement of a PT-symmetric Su-Schrieffer-Heeger quantum battery
A-Long Zhou, Ya-Wen Xiao, Nuo Xu +5
We investigate a non-Hermitian quantum battery based on the Su-Schrieffer-Heeger (SSH) lattice, charged through a parity-time (PT)-symmetric protocol that alternates gain and loss…
Generalized adiabatic approximation to the quantum Rabi model
Zi-Min Li, Murray T. Batchelor
The quantum Rabi model (QRM) describes the interaction between a two-level system (qubit) and a quantum harmonic oscillator. In the limit where the qubit frequency is smaller than…
Hidden symmetry in the biased Dicke model
Xilin Lu, Zi-Min Li, Vladimir V. Mangazeev +1
The symmetry operators generating the hidden symmetry of the asymmetric quantum Rabi model (AQRM) at bias have recently been constructed…
Hidden symmetry and tunnelling dynamics in asymmetric quantum Rabi models
Zi-Min Li, Murray T. Batchelor
The asymmetric quantum Rabi model (AQRM) has a broken symmetry, with generally a non-degenerate eigenvalue spectrum. In some special cases where the asymmetric param…
Non-orthogonal qubit states expansion for the asymmetric quantum Rabi model
Zi-Min Li, Devid Ferri, Murray T. Batchelor
We present a physically motivated variational wave function for the ground state of the asymmetric quantum Rabi model (AQRM). The wave function is a weighted superposition of squee…
The asymmetric quantum Rabi model and generalised Pöschl-Teller potentials
Kai-Long Guan, Zi-Min Li, Clare Dunning +1
Starting with the Gaudin-like Bethe ansatz equations associated with the quasi-exactly solved (QES) exceptional points of the asymmetric quantum Rabi model (AQRM) a spectral equiva…