Suspended Spot-Size Converters for Scalable Single-Photon Devices

Asli D. Ugurlu*, Henri Thyrrestrup, Ravitej Uppu, Clauderic Ouellet-Plamondon, Ruediger Schott, Andreas D. Wieck, Arne Ludwig, Peter Lodahl, Leonardo Midolo

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

6 Citations (Scopus)
52 Downloads (Pure)

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 languageEnglish
Article number1900076
JournalAdvanced Quantum Technologies
Volume3
Issue number2
Number of pages6
ISSN2511-9044
DOIs
Publication statusPublished - Feb 2020

Bibliographical note

Hy Q

Keywords

  • nanofabrication
  • quantum dot devices
  • semiconductor materials
  • single-photon sources
  • QUANTUM DOTS
  • WAVE-GUIDES
  • EFFICIENCY
  • COMPACT
  • LASERS
  • FIBER

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