Author:
Fukai Rio,Sakai Yuji,Nakagawa Tomohiro,Fujita Takafumi,Kiyama Haruki,Ludwig Arne,Wieck Andreas D.,Oiwa Akira
Abstract
Abstract
Quantum repeater composed of a quantum memory and an interface between photon qubits and memory qubits is indispensable for long-distance quantum communication. Gate-defined lateral quantum dots (QDs) can be a suitable platform for such quantum repeaters because of its aptitude for spin qubit and feasibility of quantum state transfer from photon polarization to electron spin. So far, the reported photoelectron excitation probabilities in such a QD are not high enough to implement practical repeater protocols. To improve the photoexcitation probability, we combine a surface plasmon antenna (SPA) with QDs. We fabricated a SPA designed to enhance the optical transmission to the QDs in a practical illumination setup in a refrigerator and characterized the fabricated antenna by measuring photocurrents at room temperature.
Funder
Japan Society for the Promotion of Science
Deutsche Forschungsgemeinschaft
Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials
Asahi Glass Foundation
Core Research for Evolutional Science and Technology
Bundesministerium für Bildung und Forschung
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
1 articles.
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