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Paper
Phys. Chem. Chem. Phys., 2006, 8, 1378 - 1384, DOI: 10.1039/b517470h
Exactly solvable approximating models for Rabi Hamiltonian dynamics
Andrey Pereverzev and Eric R. Bittner
The interaction between an atom and a one mode external driving field is an ubiquitous problem in many branches of physics and is often modeled using the Rabi Hamiltonian. In this paper we present a series of analytically solvable Hamiltonians that approximate the Rabi Hamiltonian and compare our results to the Jaynes–Cummings model which neglects the so-called counter-rotating term in the Rabi Hamiltonian. Through a unitary transformation that diagonalizes the Jaynes–Cummings model, we transform the counter-rotating term into separate terms representing several different physical processes. By keeping only certain terms, we can achieve an excellent approximation to the exact dynamics within specified parameter ranges.
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