论文标题
合成$ \hatσ_z$旋转依赖的力，用于光学，亚稳态和基态捕获量子尺
Synthesizing a $\hatσ_z$ spin-dependent force for optical, metastable, and ground state trapped-ion qubits
论文作者
论文摘要
近量子转换的近谐音的单个双重场通常用于$ \hatσ_x$或$ \hatσ_y$mølmer-sørensen类型的交互。使用此字段配置，还可以通过仅调节节拍音符频率来合成$ \hatσ_z$旋转依赖性力。在这里，我们扩展了以前的工作，并对该方案进行了全面的理论和实验研究，并在$^{88} $ sr $^+$中的激光接近四倍体过渡。此外，我们表征了其对光相和量子频率偏移的鲁棒性，并通过纠缠光学，亚稳态和基态速度来证明其多功能性。
A single bichromatic field near-resonant to a qubit transition is typically used for $\hatσ_x$ or $\hatσ_y$ Mølmer-Sørensen type interactions in trapped ion systems. Using this field configuration, it is also possible to synthesize a $\hatσ_z$ spin-dependent force by merely adjusting the beat-note frequency. Here, we expand on previous work and present a comprehensive theoretical and experimental investigation of this scheme with a laser near-resonant to a quadrupole transition in $^{88}$Sr$^+$. Further, we characterise its robustness to optical phase and qubit frequency offsets, and demonstrate its versatility by entangling optical, metastable, and ground state qubits.
