Silica-on-silicon waveguide quantum circuits

被引：845

作者：

Politi, Alberto ^{[1
,2
]}

Cryan, Martin J. ^{[1
,2
]}

Rarity, John G. ^{[1
,2
]}

Yu, Siyuan ^{[1
,2
]}

O'Brien, Jeremy L. ^{[1
,2
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Ctr Quantum Photon, Bristol BS8 1UB, Avon, England

[2] Univ Bristol, Dept Elect & Elect Engn, Bristol BS8 1UB, Avon, England

来源：

SCIENCE | 2008年 / 320卷 / 5876期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1126/science.1155441

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：

Quantum technologies based on photons will likely require an integrated optics architecture for improved performance, miniaturization, and scalability. We demonstrate high- fidelity silica- on- silicon integrated optical realizations of key quantum photonic circuits, including two- photon quantum interference with a visibility of 94.8 +/- 0.5%; a controlled- NOT gate with an average logical basis fidelity of 94.3 +/- 0.2%; and a path- entangled state of two photons with fidelity of >92%. These results show that it is possible to directly "write" sophisticated photonic quantum circuits onto a silicon chip, which will be of benefit to future quantum technologies based on photons, including information processing, communication, metrology, and lithography, as well as the fundamental science of quantum optics.

引用

页码：646 / 649

页数：4

共 30 条

[1]

[Anonymous], J MOD OPT

[2] Realization of a photonic controlled-NOT gate sufficient for quantum computation [J].