Open AccessStrongly suppressed multi‐photon generation from a single quantum dot in a metal‐embedded structure
Author(s) -
Nakajima Hideaki,
Ekuni Shingo,
Kumano Hidekazu,
Idutsu Yasuhiro,
Miyamura Souta,
Kato Daimotsu,
Ida Sotaro,
Sasakura Hirotaka,
Suemune Ikuo
Publication year - 2011
Publication title -
physica status solidi c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 46
eISSN - 1610-1642
pISSN - 1862-6351
DOI - 10.1002/pssc.201000519
Subject(s) - quantum dot , photon , semiconductor , pillar , optoelectronics , excitation , two photon excitation microscopy , quantum , physics , materials science , optics , quantum mechanics , structural engineering , engineering
We introduce a novel metal‐embedded semiconductor pillar structure including quantum dots as highly efficient single‐photon sources for quantum information applications. We have developed related processes for fabricating the proposed structure and have demonstrated strongly suppressed multi‐photon generation and improved photon extraction efficiency. As a result, under non‐resonant excitation, which is highly preferable for practical use, single‐photon purity with g (2) (0) as low as 0.015 has been measured. The extremely small semiconductor volume of the metal embedded structure is a crucial factor for this observation. Moreover, single‐photon generation from a single quantum dot at a rate of up to 6.4 million per second has been achieved. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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