High Quality Entangled Photon Pair Generation in Periodically Poled Thin-Film Lithium Niobate Waveguides

被引：258

作者：

Zhao, Jie ^{[1
]}

Ma, Chaoxuan ^{[1
]}

Ruesing, Michael ^{[1
,2
]}

Mookherjea, Shayan ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

[2] Tech Univ Dresden, Inst Angew Phys, Nothnitzer Str 61, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 124卷 / 16期

基金：

美国国家科学基金会;

关键词：

2ND-HARMONIC GENERATION; FERROELECTRIC DOMAINS; BELL-INEQUALITY; QUANTUM; CONVERSION; VISUALIZATION; INTERFERENCE; MICROSCOPE; VISIBILITY; CONVERTERS;

D O I：

10.1103/PhysRevLett.124.163603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A thin-film periodically poled lithium niobate waveguide was designed and fabricated which generates entangled photon pairs at telecommunications wavelengths with high coincidences-to-accidentals counts ratio CAR > 67000, two-photon interference visibility V > 99%, and heralded single-photon autocorrelation g(H)((2))(0) < 0.025. Nondestructive in situ diagnostics were used to determine the poling quality in 3D. Megahertz rates of photon pairs were generated by less than a milliwatt of pump power, simplifying the pump requirements and dissipation compared to traditional spontaneous parametric down-conversion lithium niobate devices.

引用

页数：6

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