Quasi-bound states in continuum

Details Quasi-bound states in continuum Quasi-bound states in continuum

2007-08-03

arxiv.org/abs/0708.0460v2

Phys. Rev. Lett. 99, 210404 (2007)

Physics

Quantum Physics

4 pages, 4figures, 1 table

Scientific paper

10.1103/PhysRevLett.99.210404

We report the prediction of quasi-bound states (resonant states with very long lifetimes) that occur in the eigenvalue continuum of propagating states for a wide region of parameter space. These quasi-bound states are generated in a quantum wire with two channels and an adatom, when the energy bands of the two channels overlap. A would-be bound state that lays just below the upper energy band is slightly destabilized by the lower energy band and thereby becomes a resonant state with a very long lifetime (a second QBIC lays above the lower energy band).

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