All-optical Coherent Control of Electrical Currents in Single GaAs Nanowires
C. Ruppert, S. Thunich, G. Abstreiter, A. Fontcuberta i Morral, A. W., Holleitner, and M. Betz
TL;DR
This paper demonstrates ultrafast, phase-stable optical control of electrical currents in single GaAs nanowires using femtosecond pulses, leveraging quantum interference effects for precise current injection.
Contribution
It introduces a novel all-optical method for controlling electrical currents in nanowires through quantum interference of absorption pathways.
Findings
Ultrashort current bursts induced in GaAs nanowires
Current control achieved without bias voltage
Quantum interference enables phase-stable current injection
Abstract
A phase-stable superposition of femtosecond pulses and their second harmonic induces ultrashort microampere current bursts in single unbiased GaAs nanowires. Current injection relies on quantum interference of one- and two-photon absorption pathways.
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Taxonomy
TopicsSemiconductor Quantum Structures and Devices · Nanowire Synthesis and Applications · Mechanical and Optical Resonators