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arXiv · 2404.16867

Time-domain interferometry of electron weak localization through terahertz nonlinear response

Zi-Long Li·Xiao-Hui Li·Yuan Wan
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Abstract

We study theoretically the nonlinear optical response of disordered electrons in the regime of weak (anti)localization. Our analytical and numerical calculations reveal that, in orthogonal/symplectic class systems, two consecutive, phase coherent optical pulses generates an electric current echo that appears after the second pulse, and at a time equal to the pulse delay time. The current echo reflects the quantum interference between a self-intersecting electron path and its time reversal partner, and, therefore, provide a time-domain interferometry of weak (anti)localization. Our results can be potentially tested on disordered metal films by using terahertz two-dimensional coherent spectroscopy or ultrafast transport measurements.

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Zi-Long Li, Xiao-Hui Li, Yuan Wan. 2024-04-19. Time-domain interferometry of electron weak localization through terahertz nonlinear response. https://doi.org/10.1103/physrevresearch.6.033125

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