Title |
Bright single-photon sources in bottom-up tailored nanowires
|
---|---|
Published in |
Nature Communications, March 2012
|
DOI | 10.1038/ncomms1746 |
Pubmed ID | |
Authors |
Michael E. Reimer, Gabriele Bulgarini, Nika Akopian, Moïra Hocevar, Maaike Bouwes Bavinck, Marcel A. Verheijen, Erik P.A.M. Bakkers, Leo P. Kouwenhoven, Val Zwiller |
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. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Germany | 4 | 1% |
Spain | 2 | <1% |
United States | 2 | <1% |
Japan | 2 | <1% |
Korea, Republic of | 1 | <1% |
Brazil | 1 | <1% |
United Kingdom | 1 | <1% |
Denmark | 1 | <1% |
Unknown | 349 | 96% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 126 | 35% |
Researcher | 55 | 15% |
Student > Master | 49 | 13% |
Student > Bachelor | 20 | 6% |
Professor | 17 | 5% |
Other | 49 | 13% |
Unknown | 47 | 13% |
Readers by discipline | Count | As % |
---|---|---|
Physics and Astronomy | 200 | 55% |
Engineering | 54 | 15% |
Materials Science | 38 | 10% |
Chemistry | 9 | 2% |
Chemical Engineering | 2 | <1% |
Other | 6 | 2% |
Unknown | 54 | 15% |