6 papers
Parity-Lifted Radiative Degeneracy: Orthogonal Dipoles over Parallel Dipoles in Achiral Dielectric Cavities
Zhong-Jian Yang, Ya-Pei Wang, Lin Ma +3
Parity symmetry enforces radiative degeneracy of parity-conjugated emitters in free space. We selectively lift this degeneracy in an achiral dielectric cavity via coupling-induced…
Near-Perfect Chirality and Giant Spin-Orbit Conversion in a Single Plasmonic Cavity
Lin Ma, Zhong-Jian Yang, Xiao-Jing Du +4
To overcome the difficulty of single nanostructures in approaching the theoretical limit of chiroptical performance, we design a single plasmonic twisted dimer cavity whose magneti…
Merging the characteristics of an exceptional point and a quasi-bound state in the continuum in nanophotonic cavities
Xiao-Jing Du, Xi-Hua Guan, Yue You +3
In conventional eigenvalue analyses of non Hermitian two mode systems, mode coupling cannot produce the simultaneous occurrence of an exceptional point (EP) and a quasi bound state…
Quantum versus Classical Descriptions of Spontaneous Emission in Nanophotonic Cavities
Jian-Hua Liang, Yue You, Xi-Hua Guan +3
Here, we demonstrate that quantum and classical descriptions generally yield different results for the spontaneous emission in nanophotonic cavities. Starting from the quantized si…
Subwavelength plasmonic antennas based on asymmetric split-ring-resonators for high near-field enhancements
Yue You, Xiao-Jing Du, Lin Ma +3
As for plasmonic antenna structures that generate localized near-field enhancement, the most effective current implementations are based on electric dipole resonance modes, but thi…
Relations between near-field enhancements and Purcell factors in hybrid nanostructures of plasmonic antennas and dielectric cavities
Xu-Tao Tang, Lin Ma, Yue You +5
Strong near-field enhancements (NFEs) of nanophotonic structures are believed to be closely related to high Purcell factors (FP). Here, we theoretically show that the correlation i…