Bright single-photon sources in bottom-up tailored nanowires
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Open Access
- 1 January 2012
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 3 (1), 737
- https://doi.org/10.1038/ncomms1746
Abstract
The ability to achieve near-unity light-extraction efficiency is necessary for a truly deterministic single-photon source. The most promising method to reach such high efficiencies is based on embedding single-photon emitters in tapered photonic waveguides defined by top-down etching techniques. However, light-extraction efficiencies in current top-down approaches are limited by fabrication imperfections and etching-induced defects. The efficiency is further tempered by randomly positioned off-axis quantum emitters. Here we present perfectly positioned single quantum dots on the axis of a tailored nanowire waveguide using bottom-up growth. In comparison to quantum dots in nanowires without waveguides, we demonstrate a 24-fold enhancement in the single-photon flux, corresponding to a light-extraction efficiency of 42%. Such high efficiencies in one-dimensional nanowires are promising to transfer quantum information over large distances between remote stationary qubits using flying qubits within the same nanowire p–n junction.Keywords
This publication has 29 references indexed in Scilit:
- Electric Field Induced Removal of the Biexciton Binding Energy in a Single Quantum DotNano Letters, 2011
- A planar dielectric antenna for directional single-photon emission and near-unity collection efficiencyNature Photonics, 2011
- Single Electron Charging in Optically Active Nanowire Quantum DotsNano Letters, 2010
- Towards efficient quantum sourcesNature Photonics, 2010
- Erratum: Enhanced absorption and carrier collection in Si wire arrays for photovoltaic applicationsNature Materials, 2010
- Enhanced absorption and carrier collection in Si wire arrays for photovoltaic applicationsNature Materials, 2010
- Selective Excitation and Detection of Spin States in a Single Nanowire Quantum DotNano Letters, 2009
- Flexible Polymer‐Embedded Si Wire ArraysAdvanced Materials, 2009
- Efficient Source of Single Photons: A Single Quantum Dot in a Micropost MicrocavityPhysical Review Letters, 2002
- Solid-state single photon sources: light collection strategiesThe European Physical Journal D, 2002