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,...
Rabi oscillations at exceptional points in microwave billiards. Phys. Rev. E 75, 027201 (2007). Article ADS Google Scholar Heiss, W. D. Time behaviour near to spectral singularities. Eur. Phys. J. D 60, 257–261 (2010). Article ADS Google Scholar Nichele, F. et al. Scaling of ...
194Citations 5Altmetric Metrics Abstract Non-Hermitian theory is a theoretical framework used to describe open systems. It offers a powerful tool in the characterization of both the intrinsic degrees of freedom of a system and the interactions with the external environment. The non-Hermitian framework...
The system even shows an almost perfect Rabi-oscillation when both the eigenenergy of the time-independent effective Hamiltonian is real and the corresponding initial states are the eigenstates of the effective Hamiltonian. In the imaginary-eigenenergy phase, the population will grow or decay for ...
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 ...
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.Andreas FringThomas FrithDepartment of Mathematics City University of London Northampton Square London EC1V ...
By appropriately modulating the coupling strength, phase shift and Rabi frequency, unidirectional reflectionlessness is observed at the exceptional points (EPs). And unidirectional coherent perfect absorption is exhibited at the vicinity of the EP. These results might find applications in designing quantum...
The final amplitude is [Math Processing Error]Ω0=0.3γ2, so that there are no Rabi oscillations and the light-matter interaction is quasi-stationary in this case60. It is known that the adiabatically switching waveform (Eq. 4) undergoes self-steepening resulting in the kink (shock wave) ...
K. Classical bifurcation at the transition from Rabi to Josephson dynamics. Phys. Rev. Lett. 105, 204101 (2010). Article ADS Google Scholar Malomed, B. A. (ed) Spontaneous Symmetry Breaking, Self-trapping, and Josephson Oscillations (Springer, 2013). Feng, L., Wong, Z. J., Ma, R....
Critical systems represent physical boundaries between different phases of matter and have been intensely studied for their universality and rich physics. Yet, with the rise of non-Hermitian studies, fundamental concepts underpinning critical systems - l