Quantum control for high-fidelity multi-qubit gates

被引：20

作者：

Spiteri, Raymond J. ^{[1
]}

Schmidt, Marina ^{[1
]}

Ghosh, Joydip ^{[2
]}

Zahedinejad, Ehsan ^{[3
,4
]}

Sanders, Barry C. ^{[3
,5
]}

机构：

[1] Univ Saskatchewan, Dept Comp Sci, Saskatoon, SK S7N 5C9, Canada

[2] Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA

[3] Univ Calgary, Inst Quantum Sci & Technol, Calgary, AB T2N 1N4, Canada

[4] 1QB Informat Technol 1QBit, Vancouver, BC V6C 2B5, Canada

[5] Canadian Inst Adv Res, Program Quantum Informat Sci, Toronto, ON M5G 1M1, Canada

来源：

NEW JOURNAL OF PHYSICS | 2018年 / 20卷

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

quantum control; quantum error correction; quantum logic gates; OPTIMIZATION;

D O I：

10.1088/1367-2630/aae79a

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum control for error correction is critical for the practical use of quantum computers. We address quantum optimal control for single-shot multi-qubit gates by framing it as a feasibility problem for the Hamiltonian model that is then solved with standard global optimization software. Our approach yields faster high-fidelity (>99.99%) single-shot three-qubit-gate control than obtained previously, and it has also enabled us to solve the quantum-control problem for a fast high-fidelity four-qubit gate.

引用

页数：8

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