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Insider Brief: Toshiba and RIKEN successfully developed the Double-Transmon Coupler, achieving a two-qubit gate fidelity of 99.90%. The coupler improves gate speed (48 ns), extends coherence time, and reduces residual coupling strength to 6 kHz, addressing existing challenges in superconducting quantum computers. The Double-Transmon Coupler supports stable, easy-to-manufacture fixed-frequency transmon Read more…

Insider Brief Researchers at the Korea Institute of Science and Technology (KIST) have developed a qudit-based quantum computing algorithm that achieves chemical accuracy in estimating interatomic bond distances and ground-state energies without requiring additional error mitigation techniques. Unlike conventional quantum computing methods using qubits, the team utilized high-dimensional qudits to Read more…

Insider Brief: IBM and Pasqal are collaborating to create a unified framework for quantum and classical computing using Qiskit, enabling compatibility between their quantum systems and classical HPC resources. The framework is intended to streamline workflows by letting users choose the best hardware for each task and encourage the adoption Read more…

Insider Brief Quantum Corridor Inc. has secured $10 million in Series A funding to expand its quantum-ready fiberoptic communications network, connecting Chicago and Northwest Indiana, with plans to extend across 263 miles. The network is set up to use 263 miles of new and existing fiber-optic cable and include Quantum Read more…

Insider Brief Researchers report they linked two 127-qubit quantum processors using a real-time classical connection, effectively creating a 142-qubit system capable of computations beyond the limits of a single processor. The experiment used dynamic circuits and circuit cutting to overcome hardware limitations, demonstrating modular quantum computing with enhanced error mitigation. Read more…