Publication Date:
2017-10-03
Description:
Author(s): D. Cadeddu, M. Munsch, N. Rossi, J.-M. Gérard, J. Claudon, R. J. Warburton, and M. Poggio Over the years, a number of nanoscale electric-field sensors that can image single surface charges have been developed. Due to intrinsic limitations of their electrical or mechanical detection schemes, however, most operate at frequencies below 1 kHz. This study presents a scanning sensor based on an optically active semiconductor quantum dot, combining exquisite sensitivity and nanoscale resolution with high bandwidth. In addition to demonstrating the sensor’s feasibility, the authors lay out the improvements required to take its performance to the physical limit, to measure charging dynamics and individual tunneling events in few-electron and mesoscopic systems. [Phys. Rev. Applied 8, 031002] Published Fri Sep 29, 2017
Electronic ISSN:
2331-7019
Topics:
Physics
Permalink