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Multiphoton Processes in Driven Mesoscopic Systems

Alessandro Silva·Vladimir E. Kravtsov
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Abstract

We study the statistics of multi-photon absorption/emission processes in a mesoscopic ring threaded by an harmonic time-dependent flux $Φ(t)$. For this sake, we demonstrate a useful analogy between the Keldysh quantum kinetic equation for the electrons 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 $\hbarω$ per scattering event, we explore the crossover between ultra-quantum/low-intensity limit and quasi-classical/high-intensity regime, and the role of multiphoton processes in driving it.

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Alessandro Silva, Vladimir E. Kravtsov. 2007-06-01. Multiphoton Processes in Driven Mesoscopic Systems. https://doi.org/10.1103/physrevb.76.165303

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