Elementary array of Fabry-Perot waveguide resonators with tunable coupling

摘要

We recently proposed that an array of optical cavities containing quantum emitters could be interconnected by an optical bus made of Fabry Perot resonators lying side by side, for applications in quantum information processing and quantum simulation. Here, we demonstrate the feasibility of this geometry. We show that the resonators can be conveniently coupled, and that the coupling rate between adjacent waveguides can be widely tuned using the thermo-optic effect. The device is linearly scalable and can be combined with other integrated devices, making it more generally applicable as an adjustable optical delay line or optical interconnect.