On-chip path encoded photonic quantum Toffoli gate

被引：0

作者：

MENG LI ^{[1
,2
]}

CHU LI ^{[1
,2
]}

YANG CHEN ^{[3
]}

LAN-TIAN FENG ^{[3
]}

LINYU YAN ^{[1
,2
]}

QIAN ZHANG ^{[1
,2
]}

JUEMING BAO ^{[1
,2
]}

BI-HENG LIU ^{[3
]}

XI-FENG REN ^{[3
]}

JIANWEI WANG ^{[1
,2
,4
,5
]}

SHUFENG WANG ^{[1
,2
,4
,5
]}

YUNAN GAO ^{[1
,2
,4
,5
]}

XIAOYONG HU ^{[1
,2
,4
,5
]}

QIHUANG GONG ^{[1
,2
,4
,5
]}

YAN LI ^{[1
,2
,4
,5
]}

机构：

[1] State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University

[2] Frontiers Science Center for Nano-Optoelectronics, Peking University

[3] Key Laboratory of Quantum Information, CAS University of Science and Technology of China

[4] Collaborative Innovation Center of Extreme Optics, Shanxi University

[5] Peking University Yangtze Delta Institute of Optoelectronics

来源：

Photonics Research | 2022年 / 10卷 / 07期

基金：

中国国家自然科学基金;

关键词：

D O I：

暂无

中图分类号：

O413 [量子论];

学科分类号：

070201 ;

摘要：

The quantum Toffoli gate is one of the most important three-qubit gates, but it is challenging to construct a chip according to the complicated traditional circuit. Using the optimized 3D configuration with an overpass waveguide to reduce the circuit complexity, we successfully fabricate an on-chip path encoded photonic quantum Toffoli gate enabled by the 3D capability of the femtosecond laser direct writing(FLDW) for the first time to our knowledge, whose truth-table fidelity is higher than 85.5%. Furthermore, a path encoded four-qubit controlled-controlled-controlled NOT gate is written to confirm the scalability of this resource-saving technique.This work paves the way for the FLDW of more complex and powerful photonic quantum computation chips.

引用

页码：1533 / 1542

页数：10

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