Enhanced generation of nondegenerate photon pairs in nonlinear metasurfaces  

作　　者：Matthew Parry Andrea Mazzanti Alexander Poddubny Giuseppe Della Valle Dragomir N.Neshev Andrey A.Sukhorukov 

机构地区：[1]Australia National University,Research School of Physics,Canberra,Australia [2]ARC Centre of Excellence for Transformative Meta-Optical Systems,Canberra,Australia [3]Politecnico di Milano,Dipartimento di Fisica,Milan,Italy [4]ITMO University,Department of Physics,Saint Petersburg,Russia [5]Ioffe Institute,Saint Petersburg,Russia [6]Consiglio Nazionale delle Ricerche,Istituto di Fotonica e Nanotecnologie,Milan,Italy

出　　处：《Advanced Photonics》2021年第5期22-27,共6页先进光子学（英文）

基　　金：the support by the Australian Research Council(Nos.DP190101559,CE200100010,and FT170100331);the support of the European Union Horizon 2020 Research and Innovation Programme through the METAFAST project(Grant No.899673).

摘　　要：We predict theoretically a regime of photon-pair generation driven by the interplay of multiple bound states in the continuum resonances in nonlinear metasurfaces.This nondegenerate photon-pair generation is derived from the hyperbolic topology of the transverse phase matching and can enable orders-of-magnitude enhancement of the photon rate and spectral brightness,as compared to the degenerate regime.We show through comprehensive simulations that the entanglement of the photon pairs can be tuned by varying the pump polarization,which can underpin future advances and applications of ultracompact quantum light sources.

关 键 词：OPTICS PHOTONICS LIGHT metasurface spontaneous parametric down-conversion ENTANGLEMENT 

分 类 号：O43[机械工程—光学工程]