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- W4317254715 abstract "Exceptional points (EPs) represent a distinct type of spectral singularity in non-Hermitian systems, and intriguing physics concepts have been studied with optical EPs recently. As a system beyond photonics, the mechanical oscillators coupling with many physical systems are expected to be further exploited EPs for mechanical sensing, topology energy transfer, nonreciprocal dynamics, etc. In this study, we demonstrated on-chip mechanical EPs with a silicon optomechanical zipper cavity, wherein two near-degenerate mechanical breathing modes are coupled via a single colocalized optical mode. By tailoring the dissipative and coherent couplings between two mechanical oscillators, the spectral splitting with 1/2 order response, a distinctive feature of EP, was observed successfully. Our work provides an integrated platform for investigating the physics related to mechanical EPs on silicon chips and suggests their possible applications for ultrasensitive measurements." @default.
- W4317254715 created "2023-01-18" @default.
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- W4317254715 date "2023-01-20" @default.
- W4317254715 modified "2023-10-01" @default.
- W4317254715 title "On-chip mechanical exceptional points based on an optomechanical zipper cavity" @default.
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- W4317254715 doi "https://doi.org/10.1126/sciadv.abp8892" @default.
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