Quantum 9, 1725 (2025). https://doi.org/10.22331/q-2025-05-05-1725 We study the estimation of relative entropy $D(rho|sigma)$ when $sigma$ is known. We show that the Cramér-Rao type bound equals the relative varentropy. Our estimator attains the Cramér-Rao type bound […]
Quantum 9, 1724 (2025). https://doi.org/10.22331/q-2025-05-05-1724 Current noisy quantum computers have multiple types of errors, which can occur in the state preparation, measurement/readout, and gate operation, as well as intrinsic decoherence and relaxation. Partly motivated by […]
Quantum 9, 1723 (2025). https://doi.org/10.22331/q-2025-05-05-1723 In this work, we introduce a method to construct fault-tolerant $textit{measurement-based quantum computation}$ (MBQC) architectures and numerically estimate their performance over various types of networks. A possible application of such […]
“The Superposition Guy’s Podcast”, hosted by Yuval Boger, Chief Commercial Officer at QuEra Computing Maud Vinet, CEO and co-founder of Quobly. We discuss the company’s mission to build large-scale quantum computers based on silicon qubits. […]
Insider Brief A new study warns that restrictive quantum technology policies are entrenching global inequality by excluding the Global South from access to emerging quantum innovations. Export controls by the U.S., EU and China are […]
Heriot-Watt University has officially opened a £2.5 million ($3.3 million USD) Optical Ground Station (HOGS) at its Research Park in Edinburgh to advance satellite-based quantum-secure communication. Developed under the UK Quantum Communications Hub and featuring […]
South Korea-based quantum technology firm Norma Inc. has entered into a strategic Memorandum of Understanding with UAE-based Al Fardan Ventures to establish a dedicated quantum computing R&D and manufacturing facility in the Middle East. The […]
Insider Brief The 2025 Stanford Emerging Technology Review finds that quantum computing continues to advance but remains limited by fragile hardware, scaling challenges, and a lack of commercial readiness. While quantum simulation and sensing are […]
Insider Brief The UK government has announced expanded access to Horizon Europe research funding for British scientists and businesses working in quantum and space technologies. This development follows EU Commissioner Maroš Šefčovič’s visit to the […]
EntropiQ has officially launched as the first dedicated provider of Quantum Entropy as a Service (QEaaS), offering on-demand, elastic, and crypto-agile quantum entropy distribution tailored for critical infrastructure. The startup, headquartered in Atlanta with operations […]
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