Enhanced single photon emission from positioned InP/GaInP quantum dots coupled to a confined Tamm-plasmon mode

TL;DR

This paper demonstrates enhanced single-photon emission from site-controlled InP/GaInP quantum dots coupled to Tamm-plasmon modes, achieving high emission rates and efficiency in a hybrid metal/semiconductor structure.

Contribution

It introduces a novel hybrid structure that resonantly couples quantum dots to Tamm-plasmon modes, significantly boosting emission intensity and efficiency.

Findings

Achieved up to ~173,000 photons/sec emission rate

Confirmed single-photon emission via autocorrelation

Calculated extraction efficiency of 7%

Abstract

We report on the enhancement of the spontaneous emission in the visible red spectral range from site-controlled InP/GaInP quantum dots by resonant coupling to Tammplasmon modes confined beneath gold disks in a hybrid metal/semiconductor structure. The enhancement of the emission intensity is confirmed by spatially resolved microphotoluminescence area scans and temperature dependent measurements. Single photon emission from our coupled system is verified via second order autocorrelation measurements. We observe bright single quantum dot emission of up to ~173000 detected photons per second at a repetition rate of the excitation source of 82 MHz, and calculate an extraction efficiency of our device as high as 7%.