T
Tatsushi Akazaki
Researcher at Nippon Telegraph and Telephone
Publications - 141
Citations - 3991
Tatsushi Akazaki is an academic researcher from Nippon Telegraph and Telephone. The author has contributed to research in topics: Superconductivity & Semiconductor. The author has an hindex of 23, co-authored 141 publications receiving 3795 citations. Previous affiliations of Tatsushi Akazaki include University of Tsukuba & Tokyo University of Science.
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Strongly Enhanced Sensitivity of Piezoresistive Cantilevers by Utilizing the Superconducting Proximity Effect
TL;DR: In this article, a piezoresistive cantilever was fabricated from an InAs/AlGaSb heterostructure and a submicron-size niobium gap was patterned to form a Nb-InAs-Nb junction.
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Cooper-Pair Radiative Recombination in Semiconductor Heterostructures: Impact on Quantum Optics and Optoelectronics
Ikuo Suemune,Hirotaka Sasakura,Y. Hayashi,Kazunori Tanaka,Tatsushi Akazaki,Yasuhiro Asano,Ryotaro Inoue,Hideaki Takayanagi,Eiichi Hanamura,Jae-Hoon Huh,C. Hermannstadter,Satoru Odashima,Hidekazu Kumano +12 more
TL;DR: In this paper, the authors investigated the relationship of internal quantum efficiencies and radiative lifetimes in Cooper-pair light emitting diodes (CP-LEDs) and provided a quantitative description of the dynamic photon generation processes.
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Enhancement of electron and hole effective masses in back-gated GaAs/AlxGa1−xAs quantum wells
Shintaro Nomura,Shintaro Nomura,M. Yamaguchi,Tatsushi Akazaki,Hiroyuki Tamura,T. Maruyama,Sen Miyashita,Yoshiro Hirayama +7 more
TL;DR: In this paper, the electron and the hole effective masses are found to be density dependent in a two-dimensional electron system of a back-gated quantum well by magnetophotoluminescence spectroscopy.
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Controlling electric field and electron density in a double-gated GaAs/AlGaAs quantum well
M. Yamaguchi,Shintaro Nomura,K. Miyakoshi,Hiroyuki Tamura,Tatsushi Akazaki,Hideaki Takayanagi +5 more
TL;DR: In this article, the vertical electric field and the electron density of a two-dimensional electron system (2DES) can be controlled in a double-gated GaAs/AlGaAs quantum well (QW).
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Photon-pair generation based on superconductivity
Ikuo Suemune,Hirotaka Sasakura,Yasuhiro Asano,Hidekazu Kumano,Ryotaro Inoue,Kazunori Tanaka,Tatsushi Akazaki,Hideaki Takayanagi +7 more
TL;DR: This review paper presents the recent theoretical and experimental demonstrations that superconductivity significantly modifies and accelerates photon generation processes and leads to the solidstate simultaneously generated photon-pair sources for the potential application in quantum information and communication.