Multiphoton processes in driven mesoscopic systems
Abstract
We study the statistics of multiphoton absorption/emission processes in a mesoscopic ring threaded by a harmonic time-dependent flux Φ(t) . For this sake, we demonstrate a useful analogy between the Keldysh quantum kinetic equation for the electron distribution function and a continuous time random walk in energy space with corrections due to interference effects. Studying the probability to absorb/emit n quanta ℏω per scattering event, we explore the crossover between ultraquantum/low-intensity limit and quasiclassical/high-intensity regime, and the role of multiphoton processes in driving it.
- Publication:
-
Physical Review B
- Pub Date:
- October 2007
- DOI:
- 10.1103/PhysRevB.76.165303
- arXiv:
- arXiv:cond-mat/0611083
- Bibcode:
- 2007PhRvB..76p5303S
- Keywords:
-
- 73.23.-b;
- 73.20.Fz;
- 72.15.Rn;
- Electronic transport in mesoscopic systems;
- Weak or Anderson localization;
- Localization effects;
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect;
- Condensed Matter - Disordered Systems and Neural Networks
- E-Print:
- 6 pages, 5 figures, extended version