The open quantum system can be described by either a Lindblad master equation or a non-Hermitian Hamiltonian(NHH).However,these two descriptions usually have different exceptional points(EPs),associated with the degeneracies in the open quantum system.Here,considering a dissipative quantum Rabi model,...
Unique and flexible properties of non-Hermitian photonic systems attract ever-increasing attention via delivering a whole bunch of novel optical effects and allowing for efficient tuning light-matter interactions on nano- and microscales. Together with an increasing demand for the fast and spatially com...
Model We model the proximitised Rashba nanowire with a Hamiltonian of the form2,3 {H}_{0}=\left(\frac{{p}_{x}^{2}}{2{m}^{* }}-\mu \right){\tau }_{{\rm{z}}}+B{\sigma }_{{\rm{x}}}{\tau }_{{\rm{z}}}+\frac{\alpha }{\hbar }{p}_{x}{\sigma }_{{\rm{y...
In fact, the above creation of maximum coherence or beam splitting is not limited to a Gaussian model, and the non-Hermitian STA beam splitting can be realized in other models, such as the widely used Allen-Eberly (AE) model [39]. The Rabi frequency and detuning in the AE Fig. 3 Non...
The open quantum system can be described by either a Lindblad master equation or a non-Hermitian Hamiltonian(NHH).However,these two descriptions usually have different exceptional points(EPs),associated with the degeneracies in the open quantum system.Here,considering a dissipative quantum Rabi model,...
Traditionally, the interpretation of these SHBs has focused on Rabi splitting or Fano resonances, often concentrating solely on either far-field interference or near-field coupling. However, it is essential to recognize that both phenomena coexist in non-Hermitian scatterings. In this study, we ...
We apply the scheme to calculate the $S$ matrix elements up to the second order in the ratio between the Rabi frequency and the laser detuning. We also obtain, for this simplified multichannel model, the asymmetric line shapes of photoassociation spectroscopy, and the modification of the ...
Fig. 2: Critical non-Hermitian skin effect and finite-size scaling in the model of two coupled Hatano–Nelson chains. aThe two-chain model [Eq. (3)] with hopping asymmetry in chainsa,bdenoted byδa/b, and on-site energy offset ±V. A small inter-chaint0can cause significant coupling ...
We illustrate the working of this method for a simple Hermitian Rabi-type model by relating it to a non-Hermitian time-independent system corresponding to the one-site lattice Yang-Lee model.doi:10.1103/PhysRevA.95.010102Andreas FringThomas Frith...
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