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Square-Root Higher-Order Exceptional Points with Symmetry-Induced Multiple Spectral Responses
Haoyang Zhang, Yadi Niu, Nuo Wang +2
We generalize square-root procedure to non-Hermitian systems with finite lattices, providing a spectral operation scheme applicable to arbitrary tight-binding models. Via this gene…
Wavefront Control and Intensity Modulation of Third Harmonic Generation in Nonlocal Metasurfaces
Yu Tian, Nuo Wang, Qi Liu +4
Metasurfaces have emerged as a promising platform for integrated nonlinear optics. Nonlocal metasurfaces enable high nonlinear conversion efficiency, while the local ones can offer…
Efficient Waveform Capture without Absorption with Synthesis of Complex Frequencies
Zhaohua Tian, Yu Tian, Yadi Niu +4
A optical waveform can be synthesized by complex-frequency waves as well as by real-frequency harmonic waves. While single complex-frequency wave with exponentially rising waveform…
A Parallel Beam Splitting Based on Gradient Metasurface: Preparation and Fusion of Quantum Entanglement
Qi Liu, Xuan Liu, Yu Tian +5
Gradient metasurface, formed by a set of subwavelength unit cells with different phase modulation, is widely used in polarized beam splitting (BS) in the classical and quantum opti…
Cascade enhancement and efficient collection of single photon emission under topological protection
Yali Jia, Zhaohua Tian, Qi Liu +3
High emission rate, high collection efficiency, and immunity to the defects are the requirements of implementing on-chip single photon sources. Here, we theoretically demonstrate t…
Topological-Vacuum-Induced Strong Photon-Exciton Coupling
Yali Jia, Zihan Mo, Qi Liu +4
The electromagnetic vacuum construction based on micro-nano photonic structures is able to engineer the photon-exciton interaction at the single quantum level. Here, through engine…