QUANTUM INFORMATION Single-qubit gates based on targeted phase shifts in a 3D neutral atom array

被引：138

作者：

Wang, Yang ^{[1
]}

Kumar, Aishwarya ^{[1
]}

Wu, Tsung-Yao ^{[1
]}

Weiss, David S. ^{[1
]}

机构：

[1] Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA

来源：

SCIENCE | 2016年 / 352卷 / 6293期

基金：

美国国家科学基金会;

关键词：

LATTICE;

D O I：

10.1126/science.aaf2581

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Although the quality of individual quantum bits (qubits) and quantum gates has been steadily improving, the number of qubits in a single system has increased quite slowly. Here, we demonstrate arbitrary single-qubit gates based on targeted phase shifts, an approach that can be applied to atom, ion, or other atom-like systems. These gates are highly insensitive to addressing beam imperfections and have little cross-talk, allowing for a dramatic scaling up of qubit number. We have performed gates in series on 48 individually targeted sites in a 40% full 5 by 5 by 5 three-dimensional array created by an optical lattice. Using randomized benchmarking, we demonstrate an average gate fidelity of 0.9962(16), with an average cross-talk fidelity of 0.9979(2) (numbers in parentheses indicate the one standard deviation uncertainty in the final digits).

引用

页码：1562 / 1565

页数：4

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