Abstract
The realization of a highly efficient optical spot-size converter for the end-face coupling of single photons from GaAs-based nanophotonic waveguides with embedded quantum dots is reported. The converter is realized using an inverted taper and an epoxy polymer overlay providing a 1.3 mu m output mode field diameter. The collection of single photons from a quantum dot into a lensed fiber with a rate of 5.84 +/- 0.01 MHz is demonstrated and a chip-to-fiber coupling efficiency of is approximate to 48% estimated. The stability and compatibility with cryogenic temperatures make the epoxy waveguides a promising material to realize efficient and scalable interconnects between heterogeneous quantum photonic integrated circuits.
Original language | English |
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Article number | 1900076 |
Journal | Advanced Quantum Technologies |
Volume | 3 |
Issue number | 2 |
Number of pages | 6 |
ISSN | 2511-9044 |
DOIs | |
Publication status | Published - Feb 2020 |
Bibliographical note
Hy QKeywords
- nanofabrication
- quantum dot devices
- semiconductor materials
- single-photon sources
- QUANTUM DOTS
- WAVE-GUIDES
- EFFICIENCY
- COMPACT
- LASERS
- FIBER