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
收藏
页数：8
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