Abstract
Half-integer-photon resonances in a periodically shaken double well are investigated on the level of the -particle quantum dynamics. Contrary to nonlinear mean-field equations, the linear -particle Schrödinger equation does not contain any nonlinearity which could be the origin of such resonances. Nevertheless, analytic calculations on the -particle level explain why such resonances can be observed even for particle numbers as low as . These calculations also demonstrate why fractional photon resonances are not restricted to half-integer values.
- Received 23 December 2008
DOI:https://doi.org/10.1103/PhysRevA.79.063620
©2009 American Physical Society