Fabrication and optical characterization of photonic crystal nanocavities with electrodes for gate-defined quantum dots

被引：8
|
作者：
Tajiri, T. [1 ,6 ]
Sakai, Y. [2 ]
Kuruma, K. [1 ]
Ji, S. M. [1 ]
Kiyama, H. [2 ]
Oiwa, A. [2 ,3 ]
Ritzmann, J. [4 ]
Ludwig, A. [4 ]
Wieck, A. D. [4 ]
Ota, Y. [5 ]
Arakawa, Y. [5 ]
Iwamoto, S. [1 ,5 ]
机构：
[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, 4-6-1 Komaba, Tokyo 1538505, Japan
[2] Osaka Univ, Inst Sci & Ind Res, 8-1 Mihogaoka, Ibaraki, Osaka 5670047, Japan
[3] Osaka Univ, Inst Open & Transdisciplinary Res Initiat, Quantum Informat & Quantum Biol Div, Osaka 5650871, Japan
[4] Ruhr Univ Bochum, Lehrstuhl Angew Festkorperphys Bochum, D-44780 Bochum, Germany
[5] Univ Tokyo, Inst Nano Quantum Informat Elect, Meguro Ku, 4-6-1 Komaba, Tokyo 1538505, Japan
[6] Univ Electrocommun, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2020年 / 59卷 / SG期
关键词：
SINGLE-ELECTRON; SPIN; ENTANGLEMENT;
D O I：
10.7567/1347-4065/ab5b62
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Among various solid-state systems, gate-defined quantum dots (QD) with high scalability and controllability for single electron spin qubits are promising candidates to realize quantum spin-photon interface. The efficiency of the spin-photon interface is expected to be significantly enhanced by optical coupling of gate-defined QDs with photonic crystal (PhC) nanocavities. As the first step towards this optical coupling, we designed and experimentally demonstrated a PhC nanocavity with electrodes. The electrodes, which can form a single QD, were introduced on the top surfaces of two-dimensional PhC nanocavities with a position accuracy of a few tens of nanometers. Despite the electrodes, a resonant mode was confirmed for the PhC nanocavities through micro-photoluminescence spectroscopy. This work marks a crucial step towards optical coupling between gate-defined QDs and PhC nanocavities. (C) 2020 The Japan Society of Applied Physics
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页数：6
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