Universal holonomic single quantum gates over a geometric spin with phase-modulated polarized light.
Universal holonomic single quantum gates over a geometric spin with phase-modulated polarized light.
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DOI：
10.1364/ol.43.002380
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发表时间：
2018-05
期刊：
影响因子：
3.6
通讯作者：
Naoki Ishida;Takaaki Nakamura;T. Tanaka;S. Mishima;Hiroki Kano;Ryota Kuroiwa;Y. Sekiguchi;H. Kosak
中科院分区：
文献类型：
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作者：
Naoki Ishida;Takaaki Nakamura;T. Tanaka;S. Mishima;Hiroki Kano;Ryota Kuroiwa;Y. Sekiguchi;H. Kosak
我们证明了具有相位调制偏振光和93%平均保真度的几何电子自旋上的普适非绝热非阿贝尔完整单量子门。这允许在金刚石中的带负电荷的氮空位中心中使用简并三能级Λ型系统围绕任意轴通过由光偏振和相位定义的任何角度进行纯粹的几何旋转。由于控制光与辅助激发态完全共振，所演示的完整光门不仅速度快、功耗低，而且精度高，动力学相位不受控制误差和环境噪声的影响。因此，它允许进一步保真度的脉冲整形。
We demonstrate universal non-adiabatic non-abelian holonomic single quantum gates over a geometric electron spin with phase-modulated polarized light and 93% average fidelity. This allows purely geometric rotation around an arbitrary axis by any angle defined by light polarization and phase using a degenerate three-level Λ-type system in a negatively charged nitrogen-vacancy center in diamond. Since the control light is completely resonant to the ancillary excited state, the demonstrated holonomic gate not only is fast with low power, but also is precise without the dynamical phase being subject to control error and environmental noise. It thus allows pulse shaping for further fidelity.