2011/12/31 by Victor V. Albert · 1 citation
Physics and Astronomy · #cond-mat.mes-hall #physics.chem-ph #quant-ph
paper · pdf · doi:10.1103/physrevlett.108.180401
published as Phys. Rev. Lett. 108, 180401 (2012) · 5 pages, 3 figures + supplement (2 pages); to appear in Phys. Rev. Lett
arxiv created 2012/03/13 · arxiv updated 2012/05/03
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.