Welcome to the Quantum News Daily Brief. Story 1: Shanghai Jiao Tong University: Researchers Improve Quantum State Fidelity Estimation with Faster Protocol. Qisheng Wang, from Shanghai Jiao Tong University, and colleagues have achieved a key advancement in estimating the fidelity of an unknown quantum state to a known reference state. The new method achieves a sample complexity of O(r2/varepsilon2) with optimal dependence on the error $\varepsilon$ for a reference state of rank $r$. This improve

Welcome to the Quantum News Daily Brief. Story 1: Peking University Team Develops Bias-Corrected Moment Estimator for Quantum Metrology. Shaowei Du of the Peking University and colleagues from Shenzhen Technology University, INO-CNR, and Shanxi University have made a key advance in quantum metrology by constructing a bias-corrected estimator with bias scaling as O(1/ν³), where ν represents the number of measurements. This allows determination of how many measurements are needed to operationally

Welcome to the Quantum News Daily Brief. Story 1: Is Honeywell Stock a Buy After Its Latest Structural Shakeup?. On June 29, Honeywell completed its multistage portfolio transformation into three independent companies: Honeywell Technologies (HON +3.71%), Honeywell Aerospace (HONA +8.74%), and Solstice Advanced Materials (SOLS 3.33%). Solstice Advanced Materials, which makes refrigerants and other products, spun off last October. The latest spinoff gives Honeywell investors one Honeywell Aerospa

Welcome to the Quantum News Daily Brief. Story 1: Integrated Photon-Memory Entanglement Generation using Dual Photonic Resonators. --> Quantum Physics arXiv:2607.01324 (quant-ph) [Submitted on 1 Jul 2026] Title:Integrated Photon-Memory Entanglement Generation using Dual Photonic Resonators Authors:Alexander Kolar, Ian Chin, Conner Fong, Daniil M. Lukin, Melissa A. Guidry, Milan Palei, Jelena Vučković, Tian Zhong View a PDF of the paper titled Integrated Photon-Memory Entanglement Generation usin

Welcome to the Quantum News Daily Brief. Story 1: Superconducting Spiral Inductors for RF Reflectometry: Operation at Elevated Temperatures and Magnetic Fields. --> Quantum Physics arXiv:2607.00172 (quant-ph) [Submitted on 30 Jun 2026] Title:Superconducting Spiral Inductors for RF Reflectometry: Operation at Elevated Temperatures and Magnetic Fields Authors:Euan Parry, Murat Cubukcu, Patrick Reuvekamp, Manoj Stanley, Jonathan D. Fletcher, Alessandro Rossi View a PDF of the paper titled Supercond

Welcome to the Quantum News Daily Brief. Story 1: QICK quantum control platform: Why your lab needs it. The Quantum Instrumentation Control Kit known as QICK, is an RF control and readout system developed by engineers at Fermilab in collaboration with university research groups and industry partners, with the firmware, software, and hardware fully open source. The post QICK quantum control platform: Why your lab needs it appeared first on News. Story 2: American Physical Society: MPS Solver Cuts

Welcome to the Quantum News Daily Brief. Story 1: Dissipative Effects in Transmission Line Analogues of Hawking Radiation. --> Quantum Physics arXiv:2606.28505 (quant-ph) [Submitted on 26 Jun 2026] Title:Dissipative Effects in Transmission Line Analogues of Hawking Radiation Authors:Elián Urtubey, Fernando C. Lombardo, Paula I. Villar View a PDF of the paper titled Dissipative Effects in Transmission Line Analogues of Hawking Radiation, by Eli\'an Urtubey and 2 other authors View PDF HTML (exper

Welcome to the Quantum News Daily Brief. Story 1: Multi-parameter two-photon polarimetry at the quantum limit. --> Quantum Physics arXiv:2606.27428 (quant-ph) [Submitted on 25 Jun 2026] Title:Multi-parameter two-photon polarimetry at the quantum limit Authors:Joseph Niblo, Luca Maggio, Russell M. J. Brooks, Joseph Ho, Vincenzo Tamma, Alessandro Fedrizzi View a PDF of the paper titled Multi-parameter two-photon polarimetry at the quantum limit, by Joseph Niblo and 5 other authors View PDF HTML (e

Welcome to the Quantum News Daily Brief. Story 1: Google Quantum Computing. Featured image: Google’s Willow quantum processor, courtesy of Google Quantum AI.Quantum CompaniesGoogle Quantum AIAlphabet’s quantum lab built the chips behind two of the field’s most famous milestones, the 2019 beyond-classical result and the Willow error-correction breakthrough. This is the story of Google Quantum AI, its hardware, its two modalities and its roadmap.NASDAQ: GOOGLFounded 2012Superconducting and neutral

Welcome to the Quantum News Daily Brief. Story 1: Quantum Computing Weekly Round-Up: Week Ending June 27, 2026. This week’s quantum computing weekly round-up shows governments locking in hard PQC deadlines while photonic and silicon hardware teams deliver working integrations with NVIDIA infrastructure. Error-correction advances from QuEra and IQM make fault-tolerant systems feel reachable within a few years. European fieldlabs moved from pilot to live quantum-secure services, and targeted fundi