Optica

📣 DEADLINE TOMORROW 📣 Each year, the December issue of OPN highlights the most exciting optics research from the preceding 12 months. For a chance to be included, submit a summary of your notable peer-reviewed research before tomorrow! More info: https://bit.ly/4mDGurm

#OPG_OL helps address the increasing demand for components that offer ultra-low loss, high tunability, and resilience to fabrication imperfections: https://bit.ly/3JzJial. This study introduces low-loss, highly tunable Sagnac loop reflectors and Fabry-Pérot cavities fabricated on thin-film lithium niobate, utilizing a self-calibrated method to accurately account for small MZI losses while also reducing power consumption. Written by: Luke Qi, Ali Khalatpour, Jason F. Herrmann, Taewon Park, Devin Dean, Sam Robison, Alexander Hwang, Hubert Stokowski, Darwin Serkland, Martin M. Fejer, and Amir H. Safavi-Naeini #photonics #scienceandtechnology #PICs

Check out OPN's September Issue's Infographic to learn about the writing style of large language models: https://bit.ly/41qcPJz A study found a significant increase in certain words preferred by LLMs in PubMed abstracts since 2022. #AI #LLM #Writing

A University of Zurich team reports on the spectroradiometric calibration and temperature sensitivity analysis of a fluorescence box (FloX): https://bit.ly/4oUa3q4 Given that FloX instruments are expected to provide continuous observations with high accuracy, the researchers adopted an expanded methodology that exceeds the standard calibration procedures set by manufacturers. Their results indicate that changes in environmental temperature can introduce systematic radiometric biases that surpass the instrument’s short-term precision. Therefore, they recommend conducting additional temperature sensitivity tests on FloX spectrometers, which can affect radiometric performance. Written by: Simon A. Trim and Andreas Hueni #technology #scienceandtechnology #physics

Researchers at Heriot-Watt University developed a system that enables the spectroscopy of quantum emitters across a broad wavelength range, from near-infrared to telecom: https://bit.ly/3VpqrBe. The new common-path birefringent interferometer is particularly useful for measuring the spectrum of single quantum emitters in spectral regions where low-noise silicon cameras are unavailable. In addition to its applications in quantum technology, this system may also be beneficial for characterizing molecules that exhibit rapid switching between different fluorescence spectra. Written by: Issam Belgacem, Pasquale Cilibrizzi, Muhammad Junaid Arshad, Daniel White, Malte Kroj, Christiaan Bekker, Margherita Mazzera, Brian D. Gerardot, Angelo C. Frangeskou, Gavin W. Morley, Nguyen Tien Son, Jawad Ul-Hassan, Takeshi Ohshima, Hiroshi Abe, Lorenzo Vinco, Dario Polli, Giulio Cerullo, and Cristian Bonato #quantum #quantumtechnology #scienceandtechnology #OPG_OpticaQ

Researchers folded glass like origami, creating microscopic 3D photonic structures directly on a chip: https://bit.ly/47P5lUh Existing 3D printers produce rough 3D structures that aren’t optically uniform and thus can’t be used for high-performance optics, so a Tel Aviv University team mimicked the way a pinecone’s scales bend outward to release seeds. The laser-induced technique triggers precise bending in ultra-thin glass sheets and can be used to create highly transparent, ultra-smooth 3D microphotonic devices for a variety of applications. #photonics #chips #3D #OPG_Optica

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A novel architecture for an electro-optic digital-to-analog link leverages thin-film lithium niobate photonics, efficiently bridging electronics and photonics and paving the way for next-generation computing and communications. Read the OPN story: https://bit.ly/4mF9MWx

#News | Advancing future quantum networks 🚀 A team from Fraunhofer IOF and Friedrich-Schiller-Universität Jena has published a paper in the Journal of the Optical Society of America B. (Optica), that holds strong potential for quantum communication protocols in the telecommunication wavelength range, advancing future quantum networks. 🌐 In this work, Patrick Hendra, Josué Ricardo León Torres, Valerio Flavio Gili, and Markus Gräfe demonstrate the simultaneous generation of type 0 and type II photon pairs in a single periodically polarized rubidium-doped KTiOPO₄ (PPRKTP) waveguide. By utilizing different quasi-phase matching orders and nonlinear coefficients, this dual-SPDC scheme paves the way for compact, versatile quantum light sources. 📄 Read the full paper here 👉https://lnkd.in/epS482PW 📷 What you see: A 3D artistic illustration of microstructured waveguide channels with periodic poling patterns on a chip, a design used to control light for advanced photonic applications.

A team of researchers from UC Berkeley EECS and Berkeley Lab has developed a new chip that can simultaneously control multiple quantum light sources. Published in Optica, this work is a major step toward building the compact, scalable quantum networks needed for long-distance quantum communication. https://bit.ly/3UOrfiV