• Corpus ID: 118316634

The justification of 'Two-Level Approximation' in strong light-matter interaction

  title={The justification of 'Two-Level Approximation' in strong light-matter interaction},
  author={Faheel Hashmi and Shi-Yao Zhu},
We investigate the influence of the additional third level on the dynamic evolution of a Two-Level system interacting with a coherent field in the strong coupling regime where Rotating Wave Approximation is not valid. We find that the additional level has great influence on the evolution of the system population. Our results show that the Two-Level model is not a good approximation in this strong light-matter coupling regime. We further investigate the parameter space where the Two-Level model… 

Figures from this paper


Coherent population trapping beyond the rotating-wave approximation
We consider the case of interaction of a three-level atom with a high intensity pulse electromagnetic field. Rabi frequencies are assumed to be of the order of the transition frequency or greater. We
Matrix perturbation theory for driven three‐level systems with damping
We investigate the dynamics of the Λ system driven by two resonant laser fields in presence of dissipation for coupling strengths where the rotating‐wave approximation starts to break down. This
Rabi model beyond the rotating-wave approximation: Generation of photons from vacuum through decoherence
We study numerically the dynamics of the Rabi Hamiltonian, which describes the interaction of a single cavity mode and a two-level atom without the rotating wave approximation. We analyze this system
Generalized rotating-wave approximation for arbitrarily large coupling.
  • E. Irish
  • Physics
    Physical review letters
  • 2007
A generalized version of the rotating-wave approximation for the single-mode spin-boson Hamiltonian is presented. It is shown that performing a simple change of basis prior to eliminating the
Classical realization of a strongly driven two-level system.
A classical two-level system has been realized by coupling two propagation or two polarization modes of an optical ring resonator. This system can be driven by periodic modulation of either the
Deep strong coupling regime of the Jaynes-Cummings model.
This work proposes an intuitive and predictive physical frame to describe the DSC regime where photon number wave packets bounce back and forth along parity chains of the Hilbert space, while producing collapse and revivals of the initial population.
Chaos in the Semiclassical N-Atom Jaynes-Cummings Model: Failure of the Rotating-Wave Approximation
The problem of a collection of two-level atoms interacting with a single-mode classical electromagnetic field is considered. It is found that the model with an initial population inversion exhibits
Discussions of ground state in Lambda-type three-level system
The effects of counter-rotating terms on ground states (GS) of a lambda-type three-level atomic system coupled with two fields are examined. The GS, which are dark states in rotating wave
Semiclassical many-mode Floquet theory. III. SU(3) dynamical evolution of three-level systems in intense bichromatic fields.
  • Ho, Chu
  • Physics
    Physical review. A, General physics
  • 1985
Instead of solving the time-dependent generalized Bloch equations, the SU(3) dynamical evolution of the coherent vector S\ensuremath{\rightarrow} as well as various symmetry-breaking effects can be expediently studied by the use of the MMFT and expressed in terms of a few time-independent quasienergy eigenvalues and eigenvectors.
Quantum Rabi model for N-state atoms.
A tractable N-state Rabi Hamiltonian is introduced by extending the parity symmetry of the two-state model and a group-theoretical treatment provides physical insight into dynamics and a modified rotating wave approximation obtains accurate analytical energies.