open access

https://hdl.handle.net/2115/57112

Two-photon interference and coherent control of single InAs quantum dot emissions in an Ag-embedded structure

英語

2014-07-28

American Institute of Physics

Journal of applied physics

116(4)

043103-1-043103-6

We have recently reported the successful fabrication of bright single-photon sources based on Ag-embedded nanocone structures that incorporate InAs quantum dots. The source had a photon collection efficiency as high as 24.6%. Here, we show the results of various types of photonic characterizations of the Ag-embedded nanocone structures that confirm their versatility as regards a broad range of quantum optical applications. We measure the first-order autocorrelation function to evaluate the coherence time of emitted photons, and the second-order correlation function, which reveals the strong suppression of multiple photon generation. The high indistinguishability of emitted photons is shown by the Hong-Ou-Mandel-type two-photon interference. With quasi-resonant excitation, coherent population flopping is demonstrated through Rabi oscillations. Extremely high single-photon purity with a g((2))(0) value of 0.008 is achieved with pi-pulse quasi-resonant excitation.

学術雑誌論文

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Copyright 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics and may be found at http://scitation.aip.org/content/aip/journal/jap/116/4/10.1063/1.4891224.

0021-8979

1089-7550

AA00693547