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Updated: Jun 13, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
Theory of electro-optic modulation via a quantum dot coupled to a nano-resonator
Arka Majumdar1, Nicolas Manquest, Andrei Faraon
1E L Ginzton Laboratory, Stanford University, Stanford, CA 94305, USA. arkam@stanford.edu
Abstract:
In this paper, we analyze the performance of an electro-optic modulator based on a single quantum dot strongly coupled to a nano-resonator, where electrical control of the quantum dot frequency is achieved via quantum confined Stark effect. Using realistic system parameters, we show that modulation speeds of a few tens of GHz are achievable with this system, while the energy per switching operation can be as small as 0.5 fJ. In addition, we study the non-linear distortion, and the effect of pure quantum dot dephasing on the performance of the modulator.

