Individually Addressed Entangling Gates in a Two-Dimensional Ion Crystal
arxiv(2024)
摘要
Two-dimensional (2D) ion crystals have become a promising way to scale up
qubit numbers for ion trap quantum information processing. However, to realize
universal quantum computing in this system, individually addressed
high-fidelity two-qubit entangling gates still remain challenging due to the
inevitable micromotion of ions in a 2D crystal as well as the technical
difficulty in 2D addressing. Here we demonstrate two-qubit entangling gates
between any ion pairs in a 2D crystal of four ions. We use symmetrically placed
crossed acousto-optic deflectors (AODs) to drive Raman transitions and achieve
an addressing crosstalk error below 0.1
sequence by alternatingly addressing two target ions, making it compatible with
any single-ion addressing techniques without crosstalk from multiple addressing
beams. We further examine the gate performance versus the micromotion amplitude
of the ions and show that its effect can be compensated by a recalibration of
the laser intensity without degrading the gate fidelity. Our work paves the way
for ion trap quantum computing with hundreds to thousands of qubits on a 2D ion
crystal.
更多查看译文
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要