Local temperature control of photonic crystal devices via micron-scale electrical heaters

TL;DR

This paper presents a technique for precise local temperature control of photonic crystal devices using micron-scale electrical heaters, enabling fast tuning of quantum dot resonances on a chip.

Contribution

The authors introduce a novel micron-scale electrical heating method for local temperature tuning of photonic devices, achieving high-speed control and independent tuning of multiple devices.

Findings

Achieved temperature tuning at hundreds of kHz.

Demonstrated control of quantum dot resonances.

Enabled independent tuning of multiple devices.

Abstract

We demonstrate a method to locally control the temperature of photonic crystal devices via micron-scale electrical heaters. The method is used to control the resonant frequency of InAs quantum dots strongly coupled to GaAs photonic crystal resonators. This technique enables independent control of large ensembles of photonic devices located on the same chip at tuning speed as high as hundreds of kHz.