We study the statistics of multiphoton absorption/emission processes in a mesoscopic ring threaded by a harmonic time-dependent flux Phi(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 h omega 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. © 2007 The American Physical Society.
Multiphoton processes in driven mesoscopic systems
Silva, Alessandro;
2007-01-01
Abstract
We study the statistics of multiphoton absorption/emission processes in a mesoscopic ring threaded by a harmonic time-dependent flux Phi(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 h omega 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. © 2007 The American Physical Society.| File | Dimensione | Formato | |
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