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- W4225553654 abstract "Singularities which symbolize abrupt changes and exhibit extraordinary behavior are of a broad interest. We experimentally study optomechanically induced singularities in a compound system consisting of a three-dimensional aluminum superconducting cavity and a metalized high-coherence silicon nitride membrane resonator. Mechanically induced coherent perfect absorption and anti-lasing occur simultaneously under a critical optomechanical coupling strength. Meanwhile, the phase around the cavity resonance undergoes an abrupt π-phase transition, which further flips the phase slope in the frequency dependence. The observed infinite discontinuity in the phase slope defines a singularity, at which the group velocity is dramatically changed. Around the singularity, an abrupt transition from an infinite group advance to delay is demonstrated by measuring a Gaussian-shaped waveform propagating. Our experiment may broaden the scope of realizing extremely long group delays by taking advantage of singularities." @default.
- W4225553654 created "2022-05-05" @default.
- W4225553654 creator A5034242615 @default.
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- W4225553654 creator A5070676893 @default.
- W4225553654 creator A5075797043 @default.
- W4225553654 creator A5087631945 @default.
- W4225553654 date "2021-12-29" @default.
- W4225553654 modified "2023-10-13" @default.
- W4225553654 title "Optomechanical Anti-Lasing with Infinite Group Delay at a Phase Singularity" @default.
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- W4225553654 doi "https://doi.org/10.1103/physrevlett.127.273603" @default.
- W4225553654 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35061429" @default.
- W4225553654 hasPublicationYear "2021" @default.
- W4225553654 type Work @default.