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Nanowire waveguides launching single photons in a Gaussian mode for ideal fiber coupling.
- Source :
-
Nano letters [Nano Lett] 2014 Jul 09; Vol. 14 (7), pp. 4102-6. Date of Electronic Publication: 2014 Jun 16. - Publication Year :
- 2014
-
Abstract
- Quantum communication as well as integrated photonic circuits require single photons propagating in a well-defined Gaussian mode. However, tailoring the emission mode to a Gaussian remains an unsolved challenge for solid-state quantum emitters due to their random positioning in the host material or photonic structure. Here, we overcome these limitations by embedding a semiconductor quantum dot in a tapered nanowire waveguide. Owing to the deterministic positioning of the emitter in the waveguide, we demonstrate a Gaussian emission profile in the far field. Hence, we further couple the emission into a single-mode optical fiber with a record efficiency of 93%, thereby addressing a major hurdle for practical implementation of single photon sources in emerging photonic technologies.
Details
- Language :
- English
- ISSN :
- 1530-6992
- Volume :
- 14
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Nano letters
- Publication Type :
- Academic Journal
- Accession number :
- 24926884
- Full Text :
- https://doi.org/10.1021/nl501648f