论文标题
在嘈杂的横向运动的情况下，在单独补充的原子量子A上的量子门
Quantum Gates on Individually-Addressed Atomic Qubits Subject to Noisy Transverse Motion
论文作者
论文摘要
由于其可忽略不计的闲置错误以及通过集中的光场实现一组完整的可重构门操作的能力，因此被困的原子Qubits代表了扩展量子计算机的最有前途的技术之一。但是，量子门操作的保真度可以受到横向激光的原子的弱限制的限制。我们通过在多达25个被困的原子离子的链中进行单独深化的纠缠大门来介绍这种效果的测量，这些门沿链轴较弱。我们提出了一个模型，该模型准确地描述了由噪声电场引起的离子的残留加热所观察到的分解性。我们建议通过使用链中散布在链中的辅助离子来抑制这些效果，以在整个量子电路中交感神经来冷却量子离子。
Individual trapped atomic qubits represent one of the most promising technologies to scale quantum computers, owing to their negligible idle errors and the ability to implement a full set of reconfigurable gate operations via focused optical fields. However, the fidelity of quantum gate operations can be limited by weak confinement of the atoms transverse to the laser. We present measurements of this effect by performing individually-addressed entangling gates in chains of up to 25 trapped atomic ions that are weakly confined along the chain axis. We present a model that accurately describes the observed decoherence from the residual heating of the ions caused by noisy electric fields. We propose to suppress these effects through the use of ancilla ions interspersed in the chain to sympathetically cool the qubit ions throughout a quantum circuit.
