23 citations · 64 across the 5 of their papers we have counts for
5 papers · 1 filter
High Finesse Cavity with Anapole-Assisted Resonant Subwavelength Particle Mirror
Z. Xi, H. P. Urbach
Strong light interaction with a subwavelength object has been a long pursuing goal with difficulties mainly arising from the diffraction limit. We propose a high finesse cavity wit…
Fisher-Information Efficient Metagratings for Transverse Displacement Metrology at the Measurement Independent Shot-Noise Limit
Zheng Xi, Sander Konijnenberg, H. P. Urbach
We derive the measurement independent precision bound for transverse displacement metrology using a classical source. Using tools from quantum estimation theory and metamaterial de…
Retrieving the Size of Deep-subwavelength Objects via Tunable Optical Spin-Orbit Coupling
Zheng Xi, H. P. Urbach
We propose a scheme to retrieve the size parameters of a nano-particle on a glass substrate at a scale much smaller than the wavelength. This is achieved by illuminating the partic…
Spatial Mode Selective Waveguide with Hyperbolic Cladding
Y. Tang, Z. Xi, M. Xu +3
Hyperbolic Meta-Materials~(HMMs) are anisotropic materials with permittivity tensor that has both positive and negative eigenvalues. Here we report that by using a type II HMM as c…
Controllable directive radiation of a magnetic dipole above planar metal surface
Zheng Xi, Yonghua Lu, Peijun Yao +3
We report unidirectional radiation of a magnetic dipole above planar metal surface, the radiation direction can be manipulated via changing the distance between the dipole and the…