Harvard unveils 3,000-qubit quantum system running continuously over two hours

Recent advancements in quantum computing highlight significant progress in qubit stability, scale, and operational speed. Researchers have demonstrated a system of over 3,000 qubits capable of continuous operation for more than two hours, marking a leap toward practical quantum supercomputers that could revolutionize various fields (Harvard Gazette). Meanwhile, Paris-based startup Alice & Bob achieved qubit coherence times exceeding one hour, vastly surpassing previous records and moving closer to fault-tolerant quantum computing by reducing error rates (Forbes). Devices with over 6,000 qubits are being developed using neutral cesium atoms, showcasing the potential for scalable quantum architectures though practical computation is still under investigation (The Mondo News). Improvements in qubit readout speeds using superconducting circuits have also been reported, addressing a bottleneck in quantum gate operations and enhancing overall quantum computer performance (Phys.org). Together, these breakthroughs represent critical strides toward the realization of reliable, large-scale quantum computers.