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arXiv · 1112.0849

Quantum Rabi model for N-state atoms

Victor V. Albert
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Abstract

A tractable N-state Rabi Hamiltonian is introduced by extending the parity symmetry of the two-state model. The single-mode case provides a few-parameter description of a novel class of periodic systems, predicting that the ground state of certain four-state atom-cavity systems will undergo parity change at strong coupling. A group-theoretical treatment provides physical insight into dynamics and a modified rotating wave approximation obtains accurate analytical energies. The dissipative case can be applied to study excitation energy transfer in molecular rings or chains.

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Victor V. Albert. 2011-12-05. Quantum Rabi model for N-state atoms. https://doi.org/10.1103/physrevlett.108.180401

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