Multi-level interference resonances in strongly-driven three-level systems

Abstract

We study multi-photon resonances in a strongly-driven three-level quantum system, where one level is periodically swept through a pair of levels with constant energy separation $E$. Near the multi-photon resonance condition $n\hslash \omega =E$, where $n$ is an integer, we find qualitatively different behavior for $n$ even or odd. We explain this phenomenon in terms of families of interfering trajectories of the multi-level system. Remarkably, the behavior is insensitive to fluctuations of the energy of the driven level, and survives deep into the strong dephasing regime. The setup can be relevant for a variety of solid state and atomic or molecular systems. In particular, it provides a clear mechanism to explain recent puzzling experimental observations in strongly-driven double quantum dots.

4 pages, 3 figures

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Cited by in corpus (2)

• Electric-dipole-induced spin resonance in a lateral double quantum dot incorporating two single domain nanomagnets
• Photon assisted long-range tunneling