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Dynamical Decoupling of a Geometric Qubit
http://hdl.handle.net/10131/00012839
http://hdl.handle.net/10131/000128398b05fd8a-a96e-44d0-90d1-145baf0784d7
名前 / ファイル | ライセンス | アクション |
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Dynamical decoupling of a geometric qubit_PRAppSecond_M40a.pdf (698.8 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-12-13 | |||||
タイトル | ||||||
タイトル | Dynamical Decoupling of a Geometric Qubit | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Geometric & topological phases, Open quantum systems & decoherence, Quantum gates, Quantum information with solid state qubits, Quantum memories, Nitrogen vacancy centers in diamond, Polarization, Optically detected magnetic resonance | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Sekiguchi, Yuhei
× Sekiguchi, Yuhei× Komura, Yusuke× Kosaka, Hideo |
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著者所属 | ||||||
Yokohama National University | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Quantum bits or qubits naturally decohere by becoming entangled with uncontrollable environments. Dynamical decoupling is, therefore, required to disentangle qubits from an environment by periodically reversing the qubit bases, but this causes rotation error to accumulate. Whereas a conventional qubit is rotated within the SU(2) two-level system, a geometric qubit defined in the degenerate subspace of a V-shaped SU(3) three-level system is geometrically rotated via the third ancillary level to acquire a geometric phase. We demonstrate that simply by introducing detuning, the dynamical decoupling of the geometric qubit on a spin triplet electron in a nitrogen-vacancy center in diamond can be made to spontaneously suppress error accumulation. The geometric dynamical decoupling extends the coherence time of the geometric qubit up to 1.9 ms, limited by the relaxation time, with 128 decoupling gates at room temperature. Our technique opens a route to holonomic quantum memory for use in various quantum applications requiring sequential operations. | |||||
書誌情報 |
Physical Review Applied 巻 12, 号 5, p. 051001, 発行日 2019-11 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 23317019 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1103/PhysRevApplied.12.051001 | |||||
権利 | ||||||
権利情報 | © 2019 American Physical Society | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
出版者 | ||||||
出版者 | APS | |||||
関係URI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevApplied.12.051001 | |||||
関連名称 | https://doi.org/10.1103/PhysRevApplied.12.051001 |