High coincidence-to-accidental ratio continuous-wave photon-pair generation in a grating-coupled silicon strip waveguide

被引：24

作者：

Guo, Kai ^{[1
,2
]}

Christensen, Erik N. ^{[2
]}

Christensen, Jesper B. ^{[2
]}

Koefoed, Jacob G. ^{[2
]}

Bacco, Davide ^{[2
]}

Ding, Yunhong ^{[2
]}

Ou, Haiyan ^{[2
]}

Rottwitt, Karsten ^{[2
]}

机构：

[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China

[2] Tech Univ Denmark, Dept Photon Engn, DK-2800 Lyngby, Denmark

来源：

APPLIED PHYSICS EXPRESS | 2017年 / 10卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

QUANTUM CRYPTOGRAPHY; CORRELATED PHOTONS; OPTICAL-FIBERS; SINGLE PHOTONS; BELL THEOREM; TIME; ENTANGLEMENT; CRYSTAL; NOISE;

D O I：

10.7567/APEX.10.062801

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a very high coincidence-to-accidental ratio of 673 using continuous-wave photon-pair generation in a silicon strip waveguide through spontaneous four-wave mixing. This result is obtained by employing on-chip photonic-crystal-based grating couplers for both low-loss fiber-to-chip coupling and on-chip suppression of generated spontaneous Raman scattering noise. We measure a minimum heralded second-order correlation of g(H)((2)) (0) = 0.12, demonstrating that our source operates in the single- photon regime with low noise. (C) 2017 The Japan Society of Applied Physics

引用

页数：4