Independent electrical tuning of separated quantum dots in coupled photonic crystal cavities

Susanna M. Thon, Hyochul Kim, Cristian Bonato, Jan Gudat, Jenna Hagemeier, Pierre M. Petroff, Dirk Bouwmeester

Published 2011-09-23Version 1

Systems of photonic crystal cavities coupled to quantum dots are a promising architecture for quantum networking and quantum simulators. The ability to independently tune the frequencies of laterally separated quantum dots is a crucial component of such a scheme. Here, we demonstrate independent tuning of laterally separated quantum dots in photonic crystal cavities coupled by in-plane waveguides by implanting lines of protons which serve to electrically isolate different sections of a diode structure.