TRANSFER-MATRIX METHOD FOR A DYNAMICAL MESOSCOPIC SYSTEM

A transfer matrix method for analyzing quantum transport in harmonical ly driven systems with spatiotemporal coherence has been developed. In such systems, the energy conservation law is violated, and transport occurs through an infinite number of sideband states. This transfer ma trix method enables us to compute transmission and reflection probabil ities of such dynamical mesoscopic systems without consuming a large a mount of computing time and memory space. We apply this technique to p hoton-assisted tunneling (PAT) in a dual-gate field-effect transistor, and demonstrate the possibility of observing resonant level splitting s due to the dynamical Stark effect in dual-gate PAT devices.