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Emerging concepts in time-resolved quantum electronics

With the recent technical progress, single electron sources have moved from theory to the lab. Conceptually new types of experiments where one probes directly the internal quantum dynamics of the devices are within grasp. In this talk we present new intriguing effects and possible experiments. In particular we introduce the concept of dynamical modification of interference pattern of a quantum system. We show that when raising a DC voltage V on an electronic Mach-Zehnder interferometer, the transient current response oscillates as cos( eVt/ ħ ). This effect will be further extended to voltage pulses in a Fabry-Perot cavity. We also propose to dynamically modify the system itself, and propose to stop an electron in the bulk of a two-dimensional electron gas in the quantum Hall regime. All these results will be presented with numerical simulations alongside an analytical analysis.

Physics Reports 534, 1 (2014), Nat. Comm. 5, 3844 (2014), Phys. Rev. B 90, 161305(R) (2014).


paul.haney [at] (Paul Haney), 301-975-4025

Benoit Gaury

CNST/UMD Postdoctoral Researcher
Created March 23, 2015, Updated May 13, 2016