title: Coherently driven semiconductor quantum dot at a telecommunication wavelength.
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.
authors.affiliation: Institute for Nano Quantum Information Electronics, and Institute of Industrial Science, University of Tokyo, Tokyo, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Takagi
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Nakaoka
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Watanabe
authors.forename: Naoto
authors.initials: N
authors.lastname: Kumagai
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Arakawa
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D045663:Quantum Dots; D012666:Semiconductors; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*