Coherently driven semiconductor quantum dot at a telecommunication wavelength
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Updated: Jul 2, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
Hiroyuki Takagi1, Toshihiro Nakaoka, Katsuyuki Watanabe
1Institute for Nano Quantum Information Electronics, and Institute of Industrial Science, University of Tokyo, Tokyo, Japan.
Abstract:
We proposed and demonstrate use of optical driving pulses at a telecommunication wavelength for exciton-based quantum gate operation. The exciton in a self-assembled quantum dot is coherently manipulated at 1.3 microm through Rabi oscillation. The telecom-band exciton-qubit system incorporates standard optical fibers and fiber optic devices. The coherent manipulation of the two-level system compatible with flexible and stable fiber network paves the way toward practical optical implementation of quantum information processing devices.
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