Electrical control of lifetime-limited quantum emitters using 2D materials

TL;DR

This paper presents a hybrid nanophotonic device integrating lifetime-limited quantum emitters with 2D materials, enabling broadband, fast, and reversible tuning of emission properties for quantum photonics and sensing applications.

Contribution

It introduces a novel, ultra-compact hybrid device that achieves broadband and rapid tuning of quantum emitter emission energies without degrading their photostability.

Findings

Achieved over 400 GHz tuning range.

Demonstrated 100 MHz modulation speed.

Maintained emitter linewidth of 40 MHz.

Abstract

Solid state quantum emitters are a mainstay of quantum nanophotonics as integrated single photon sources (SPS) and optical nanoprobes. Integrating such emitters with active nanophotonic elements is desirable in order to attain efficient control of their optical properties but typically degrades the photostability of the emitter itself. Here, we demonstrate a tuneable hybrid device that integrates lifetime-limited single emitters (linewidth : 40 MHz) and 2D materials at sub-wavelength separation without degradation of the emission properties. Our device s nanoscale dimensions enable ultra-broadband tuning (tuning range larger than 400 GHz) and fast modulation (frequency : 100 MHz) of the emission energy, which renders it an integrated, ultra-compact tuneable SPS. Conversely, this offers a novel approach to optical sensing of 2D material properties using a single emitter as a nanoprobe.