Dynamics of strongly driven two-level systems: analytical solutions

✍ Scribed by M. Wagner; P. Vasilopoulos

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 142 KB
• Volume: 23
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1996.0335

✦ Synopsis

The dynamics of a two-level system, strongly driven by an external sinusoidal field, is studied using a systematic iteration procedure. Analytical solutions are presented for the quasieigenenergies and Floquet states. They are valid for arbitrary strengths of the driving field and thus encompass the existing low-and high-field solutions. The higher-order corrections to the Floquet states are essential for properly describing the dynamics on the time scale of the driving field (as opposed to the time scale associated with the tunnel splitting), which is relevant for harmonic-frequency generation. The convergence of the procedure is good for driving frequencies larger than half the tunnel splitting.