Self-organized optofluidic locking enables stable single-frequency lasing in dynamic liquid media

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• Physics/Optics & photonicsSep 25, 2026

  Lu+ optical frequency references with accuracy verified at the 19th digit

  Here we report two 176Lu+ single-ion optical frequency references, each with evaluated fractional frequency uncertainty near 1 × 10−19, which are directly compared by correlation spectroscopy and demonstrate agreement, with a measured relative frequency difference of [−0.1 ± (5.7)stat ± (1.0)sys] × 10−19, where ‘stat’ and ‘sys’ indicate the statistical and systematic uncertainty, respectively.

  K. J. Arnold, Michael Dao Kang Lee, Qi Zhao and 4 more — Nature

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• Physics/Optics & photonicsSep 25, 2026

  Ultrasensitive chiral detection by nonlinear chiroptics in spiral plasmonic metastructures surpasses linear limits

  This work introduces a breakthrough in ultrasensitive chiral detection by combining nonlinear optics and tailored chiral plasmonics.

  Yong Tan, Y. H. Cheng, Xiaolin Lü and 4 more — Science Advances

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• Physics/Optics & photonicsSep 25, 2026

  Zero-forward Kerker scattering via synthesized complex-frequency excitation

  Here, we show, both theoretically and experimentally, how zero-forward Kerker scattering can be effectively synthesized by a weighted superposition of readily accessible real-frequency responses.

  Jianfei Liu{\dag}, Zheng Gong{\dag}, Ao Li and 3 more — arXiv

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• Physics/Optics & photonicsSep 25, 2026

  Observation of symmetry breaking in time-varying scattering systems

  Here we demonstrate a universal symmetry-breaking transition in a periodically driven finite scattering system.

  Miguel Verde, David Globosits, Thomas F. Allard and 5 more — arXiv

  PreprintBold claims, read criticallyClaims a big step

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• Physics/Optics & photonicsSep 25, 2026

  Tunable hyperbolic metamaterials for brightening single-photon emission

  These results establish the radiative Purcell factor as a more reliable figure of merit than the conventional Purcell factor for engineering quantum emitters, and provide a practical route toward actively tunable, bright single-photon sources based on hyperbolic metamaterials.

  Manobina Karmakar, Pavel Klok, Filip Ligmajer and 1 more — arXiv

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