Journal article · Preprint article
Strain Tunable Single-Photon Source Based on a Quantum Dot–Micropillar System
Scalable quantum photonic architectures demand highly efficient, high-purity single-photon sources, which can be frequency matched via external tuning. We demonstrate a single-photon source based on an InAs quantum dot embedded in a micropillar resonator, which is frequency tunable via externally applied stress.
Our platform combines the advantages of a micropillar cavity and the piezo-strain-tuning technique enabling single-photon spontaneous emission enhancement via the Purcell effect and wavelength-tunable quantum dots (QDs). Our optomechanical platform has been implemented by integration of semiconductor-based QD–micropillars on a piezoelectric substrate.
The fabricated device exhibits spontaneous emission enhancement with a Purcell factor of 4.4 ± 0.7 and allows for a pure triggered single-photon generation with g(2)(0) <0.07 under resonant excitation. A quantum dot emission energy tuning range of 0.75 meV for 27 kV/cm applied to the piezosubstrate has been achieved.
Our results pave the way toward the scalable implementation of single-photon quantum photonic technologies using optoelectronic devices.
Language: | English |
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Publisher: | American Chemical Society |
Year: | 2019 |
Pages: | 2025-2031 |
ISSN: | 23304022 |
Types: | Journal article and Preprint article |
DOI: | 10.1021/acsphotonics.9b00481 |
ORCIDs: | Gregersen, Niels , 0000-0002-8023-4290 and 0000-0001-7333-515X |