A photonic nanowire trumpet for interfacing a quantum dot and a Gaussian free-space mode

Niels Gregersen, Mathieu Munsch, Nitin S. Malik, Joël Bleuse, Emmanuel Dupuy, Adrien Delga, Jesper Mørk, Jean-Michel Gérard, Julien Claudon

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Efficient coupling between a localized quantum emitter and a well defined optical channel represents a powerful route to realize single-photon sources and spin-photon interfaces. The tailored fiber-like photonic nanowire embedding a single quantum dot has recently demonstrated an appealing potential. However, the device requires a delicate, sharp needle-like taper with performance sensitive to minute geometrical details. To overcome this limitation we demonstrate the photonic trumpet, exploiting an opposite tapering strategy. The trumpet features a strongly Gaussian far-field emission. A first implementation of this strategy has lead to an ultra-bright single-photon source with a first-lens external efficiency of 0.75 ± 0.1 and a predicted coupling to a Gaussian beam of 0.61 ± 0.08.
Original languageEnglish
JournalProceedings of SPIE, the International Society for Optical Engineering
Volume8619
Pages (from-to)86190Y
Number of pages6
ISSN0277-786X
DOIs
Publication statusPublished - 2013
EventSPIE Photonics West : Physics and Simulation of Optoelectronic Devices XXI - San Francisco, CA, United States
Duration: 2 Feb 20137 Feb 2013

Conference

ConferenceSPIE Photonics West : Physics and Simulation of Optoelectronic Devices XXI
CountryUnited States
CitySan Francisco, CA
Period02/02/201307/02/2013

Keywords

  • Single-photon source
  • Photonic nanowire
  • Inverted conical tapering
  • Photonic trumpet
  • Spin-photon interface
  • Efficiency
  • Gaussian beam

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