Quantum 10, 2146 (2026). https://doi.org/10.22331/q-2026-06-30-2146 We present efficient and practical protocols to measure the second Rényi entropy, whose exponential is known as the purity. Our approach is based on expressing the purity in terms of […]
Insider Brief SpinQ has completed a RMB 1 billion Series D funding round to accelerate the development of fault-tolerant quantum computers, bringing its total fundraising over the past six months to RMB 2 billion. The […]
Insider Brief: The Quantum Kid celebrates its first anniversary as host Kai Weber turns 10, with the YouTube channel surpassing 115,000 subscribers and earning shortlist recognition in the Webby Awards and Publisher Podcast Awards. Over […]
Insider Brief Q*Bird has launched the Falqon® Key Manager, a standalone quantum key management system designed to support scalable hybrid quantum-secure networks across distributed environments. The platform enables organizations to securely manage, store, synchronize and […]
Quantum 10, 2145 (2026). https://doi.org/10.22331/q-2026-06-30-2145 Recent discoveries in asymptotically good quantum codes have intensified research on their application in quantum computation and fault-tolerant operations. This study focuses on the addressability problem within CSS codes: we […]
Quantum 10, 2144 (2026). https://doi.org/10.22331/q-2026-06-30-2144 We prove that any $n$-qubit unitary can be implemented (i) approximately in time $tilde Obig(2^{n/2}big)$ with query access to an appropriate classical oracle, and also (ii) exactly by a circuit […]
Executive Summary France’s quantum sector moved further into a deployment-focused phase in June 2026, with policy, infrastructure and commercial activity increasingly tied to national security, high-performance computing and post-quantum cybersecurity. The world took notice as […]
Insider Brief South Korea will make quantum technologies one of 10 national strategic technology areas under a five-year science and technology plan that commits more than 200 trillion won to government R&D through 2030. The […]
Insider Brief SEEQC has publicly filed an S-1 registration statement with the SEC for a proposed initial public offering and plans to list on the Nasdaq Global Market under the ticker symbol SEQC. The company […]
(A) Aromatic π-π stacking interactions exist in protein and protein complexes. (B) Overview of the workflow using TRIP for direct measurement of π-π stacking in the dimers of SARS-CoV-2 main protease, Mpro. A interdisciplinary research […]
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