Monolithic 3D integration of tantalum pentoxide nonlinear photonics

Jung, H. et al. Tantala Kerr nonlinear integrated photonics. Optica 8, 811–817 (2021). Article  ADS  Google Scholar  Desiatov, B., Shams-Ansari, A., Zhang, M., Wang, C. & Lončar, M. Ultra-low-loss integrated visible photonics using thin-film lithium niobate. Optica 6, 380–384 (2019). Article  ADS  CAS  Google Scholar  Wang, C. et al. Ultrahigh-efficiency wavelength conversion in nanophotonic periodically…

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You Switched to Claude Over Surveillance Fears. Now It Wants Your Passport

In brief Anthropic added passport and selfie verification for Claude—no other major AI chatbot currently requires the same. The move comes weeks after millions joined Claude specifically over OpenAI’s surveillance deal. Verification data goes to Persona’s servers, not Anthropic’s, and won’t be used to train models. Anthropic quietly published identity verification requirements for Claude this…

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