Photon-pair generation via bound states in the continuum in nonlinear metasurfaces

被引：2
|
作者：
Parry, Matthew [1 ]
Xing, Yifei [1 ]
Xu, Lei [2 ]
Poddubny, Alexander [1 ,3 ]
Neshev, Dragomir N. [1 ]
Sukhorukov, Andrey A. [1 ]
机构：
[1] Australian Natl Univ, Res Sch Phys & Engn, Nonlinear Phys Ctr, Canberra, ACT 2601, Australia
[2] Univ New South Wales, Sch Engn & Informat Technol, Canberra, ACT 2600, Australia
[3] Ioffe Phys Tech Inst, St Petersburg 194021, Russia
来源：
SPIE MICRO + NANO MATERIALS, DEVICES, AND APPLICATIONS 2019 | 2019年 / 11201卷
关键词：
Metasurface; photon-pair generation; dielectric; bound state in the continuum; entanglement;
D O I：
10.1117/12.2539888
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Generation of photon pairs in nonlinear materials enables the creation of non-classical entangled photon states. With ultra-thin metasurfaces, composed of optical nano-resonators, one can enable the ultimate in miniaturising nonlinear photon sources along with unprecedented configurability. We present a novel design of a nonlinear metasurface incorporating AlGaAs nanodisks with oligomer-holes, which features symmetry protected bound states in the continuum. It enables enhanced photon-pair generation at non-degenerate photon frequencies via spontaneous parametric down-conversion. This opens the potential for quantum-entanglement between photons at ultra-short time-scales across the visible and infrared regions, leading to new opportunities for quantum spectroscopy, sensing, and imaging.
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页数：2
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