论文标题
长被困的离子链的有效边带冷却协议
Efficient sideband cooling protocol for long trapped-ion chains
论文作者
论文摘要
捕获的离子是大规模量子计算的有前途的候选人。在学术和工业环境中,已经建立了几种系统,以实施适度的量子算法。自由度的有效冷却是使用被困离子进行高保真量子操作的关键要求。在这里,我们提出了一种技术,可以将单个离子并行冷却单个运动模式,从而减少将离子链带到其运动基态所需的时间。我们通过实验证明了这项技术,并开发了一个模型,以了解与更传统的方法相比,平行边带冷却技术的效率。该技术可用于使用共捕获的原子物种的分辨边带冷却,仅需要单独处理被困颗粒。
Trapped ions are a promising candidate for large scale quantum computation. Several systems have been built in both academic and industrial settings to implement modestly-sized quantum algorithms. Efficient cooling of the motional degrees of freedom is a key requirement for high-fidelity quantum operations using trapped ions. Here, we present a technique whereby individual ions are used to cool individual motional modes in parallel, reducing the time required to bring an ion chain to its motional ground state. We demonstrate this technique experimentally and develop a model to understand the efficiency of our parallel sideband cooling technique compared to more traditional methods. This technique is applicable to any system using resolved sideband cooling of co-trapped atomic species and only requires individual addressing of the trapped particles.