Nonconventional metasurfaces: from non-Hermitian coupling, quantum interactions, to skin cloak

Nanophotonics

article

Xuexin Ren¹  Pankaj K. Jha¹  Yuan Wang¹  Xiang Zhang¹ 

[1] NSF Nanoscale Science and Engineering Center (NSEC), University of California;Materials Sciences Division, Lawrence Berkeley National Laboratory

关键词: anti-Hermitian;    cloaking;    optical metasurface;    quantum vacuum engineering;    spin-Hall effect;   

DOI  :  10.1515/nanoph-2018-0006

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Metasurfaces are optically thin layers of subwavelength resonators that locally tailor the electromagnetic response at the nanoscale. Our metasurface research aims at developing novel designs and applications of metasurfaces that go beyond the classical regimes. In contrast to conventional phase gradient metasurfaces where each meta-atom responds individually, we are interested in developing metasurfaces where neighboring meta-atoms are strongly coupled. By engineering a non-Hermitian coupling between the meta-atoms, new degrees of freedom are introduced and novel functionalities can be achieved. We are also interested in combining classical metasurface with quantum emitters, which may offer opportunities for on-chip quantum technologies. Additionally, we have been designing metasurfaces to realize exciting phenomena and applications, such as ultrathin metasurface cloak and strong photonic spin-Hall effect. In this paper, we review our research efforts in optical metasurfaces in the past few years, which ranges from conventional to novel type of metasurface and from classical to quantum regime.

【 授权许可】

CC BY