A photon generating device composed of a quantum dot and a metamaterial element

We propose a single photon generating device composed of one quantum dot (QD) and one metamaterial element. Simulation by finite-difference time-domain method confirmed that the emission of the QD is controlled by the interaction with the localized surface plasmon of the metamaterial. A metamaterial...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 58; no. SB; p. SBBI06
Main Authors Mukai, Kohki, Watanabe, Sui, Okumura, Isao, Sugimoto, Takuya
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.04.2019
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Summary:We propose a single photon generating device composed of one quantum dot (QD) and one metamaterial element. Simulation by finite-difference time-domain method confirmed that the emission of the QD is controlled by the interaction with the localized surface plasmon of the metamaterial. A metamaterial element of double split ring structure was prototyped using electron beam lithography. We successfully trapped a silica-coated QD of 70 nm in diameter at the center of the double split ring. The emission peak wavelength of the device with a small number of QDs on the metamaterial element hardly changed between 160 K and 280 K as compared with the case of a QD ensemble. Significantly enhanced emission was observed at 220 K. The results can be explained as the emission of the device being dominated by the localized surface plasmon resonance of the metamaterial.
Bibliography:JJAP-s100125
ISSN:0021-4922
1347-4065
DOI:10.7567/1347-4065/ab00ef