Core Insights - QphoX, Rigetti Computing, and the National Quantum Computing Centre (NQCC) have received a multinational grant to develop optical readout of superconducting qubits using light transmitted over optical fiber [1][6] - The optical readout technique has been validated by QphoX and Rigetti, demonstrating the ability to read the state of a single superconducting qubit [2] - The collaboration aims to scale the optical qubit readout system to interface with Rigetti's 9-qubit Novera QPU, facilitating optical readout of all qubits in the processor [3] Company Summaries QphoX - QphoX is a leading developer of quantum transduction systems that enable quantum computers to network over optical frequencies, bridging the gap between microwave, optical, and telecom frequencies [7] - The company is based in Delft, Netherlands, and focuses on creating single-photon interfaces essential for quantum links between computation, state storage, and networking [7] Rigetti Computing - Rigetti is a pioneer in full-stack quantum computing, operating quantum computers over the cloud since 2017 and serving various clients through its Rigetti Quantum Cloud Services platform [8] - The company introduced its 9-qubit Novera QPU in 2023, designed for high-performance, on-premises quantum computing, and has developed the industry's first multi-chip quantum processor for scalable systems [8] National Quantum Computing Centre (NQCC) - The NQCC is the UK's national lab for quantum computing, dedicated to accelerating the development of quantum technologies and addressing scaling challenges [9] - The centre collaborates with businesses, government, and the research community to enhance quantum computing capabilities in the UK [9]