Hong-Ou-Mandel interference between independent III-V on silicon waveguide integrated lasers

被引：39

作者：

Agnesi, C. ^{[1
]}

Da Lio, B. ^{[2
]}

Cozzolino, D. ^{[2
]}

Cardi, L. ^{[2
]}

Ben Bakir, B. ^{[3
,4
]}

Hassan, K. ^{[3
,4
]}

Della Frera, A. ^{[5
]}

Ruggeri, A. ^{[5
]}

Giudice, A. ^{[5
]}

Vallone, G. ^{[1
]}

Villoresi, P. ^{[1
]}

Tosi, A. ^{[6
]}

Rottwitt, K. ^{[2
]}

Ding, Y. ^{[2
]}

Bacco, D. ^{[2
]}

机构：

[1] Univ Padua, Dipartimento Ingn Informaz, Via Gradenigo 6B, I-35131 Padua, Italy

[2] Tech Univ Denmark, Dept Photon Engn, DTU Foton, CoE SPOC, Orsteds Plads 340, DK-2800 Lyngby, Denmark

[3] Univ Grenoble Alpes, F-38054 Grenoble, France

[4] CEA, LETI, MINATEC Campus, F-38054 Grenoble, France

[5] Micro Photon Devices Srl, Via Antonio Stradivari 4, I-39100 Bolzano, Italy

[6] Politecn Milan, Dipartimento Elettron Informaz & Bioingn, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

来源：

OPTICS LETTERS | 2019年 / 44卷 / 02期

基金：

欧盟地平线“2020”;

关键词：

KEY DISTRIBUTION; QUANTUM; RATIO;

D O I：

10.1364/OL.44.000271

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The versatility of silicon photonic integrated circuits has led to a widespread usage of this platform for quantum information-based applications, including quantum key distribution (QKD). However, the integration of simple high-repetition-rate photon sources is yet to be achieved. The use of weak-coherent pulses (WCPs) could represent a viable solution. For example, measurement device independent QKD (MDI-QKD) envisions the use of WCPs to distill a secret key immune to detector side channel attacks at large distances. Thus, the integration of III-V lasers on silicon waveguides is an interesting prospect for quantum photonics. Here we report the experimental observation of Hong-Ou-Mandel interference with 46 +/- 2% visibility between WCPs generated by two independent III-V on silicon waveguide integrated lasers. This quantum interference effect is at the heart of many applications, including MDI-QKD. This Letter represents a substantial first step towards an implementation of MDI-QKD fully integrated in silicon and could be beneficial for other applications such as standard QKD and novel quantum communication protocols. (C) 2019 Optical Society of America

引用

页码：271 / 274

页数：4

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