title: A synthetic two-spin quantum bit: g-engineered exchange-coupled biradical designed for controlled-NOT gate operations.
abstract: A quantum gate: A system of two coupled electron spins that is useful for simple quantum computing operations has been prepared by synthesis of a biradical 1 and co-crystallization with an isomorphous host molecule. The two weakly exchange-coupled quantum bits (target qubit blue and control qubit red) span four electron spin states. The electron spin transition is denoted by two black arrows.
authors.affiliation: Department of Chemistry and Molecular Materials Science, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, Japan. s-nakaza@sci.osaka-cu.ac.jp
authors.forename: Shigeaki
authors.initials: S
authors.lastname: Nakazawa
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Nishida
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Ise
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Yoshino
authors.forename: Nobuyuki
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authors.lastname: Mori
authors.forename: Robabeh D
authors.initials: RD
authors.lastname: Rahimi
authors.forename: Kazunobu
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authors.lastname: Sato
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Morita
authors.forename: Kazuo
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authors.lastname: Toyota
authors.forename: Daisuke
authors.initials: D
authors.lastname: Shiomi
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kitagawa
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Hara
authors.forename: Patrick
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authors.lastname: Carl
authors.forename: Peter
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authors.lastname: Höfer
authors.forename: Takeji
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authors.lastname: Takui