Quantum leap in Finland pushes qubit to millisecond range
Aalto and VTT researchers report over 1 millisecond coherence, a breakthrough for superconducting quantum devices.
Researchers in Finland have achieved a significant leap in quantum computing by extending qubit coherence to nearly one millisecond. The team at Aalto University and the VTT Technical Research Centre reported their success in Nature Communications, marking a new record for superconducting transmon qubits.
Coherence time, the duration a quantum bit maintains its state, is crucial for quantum computing. The Finnish transmon qubit reached an echo dephasing time of 1.057 milliseconds and a median energy relaxation time of 425 microseconds, far surpassing typical values.
Such improvements reduce error rates and boost the reliability of quantum operations, paving the way for more scalable and efficient quantum processors. Researchers also shared full details of their fabrication and measurement methods to ensure reproducibility and aid future development.
Due to this, Finland demonstrates its growing role in global quantum innovation, with strategic support from national and European institutions. Experts believe this progress will strengthen hopes of achieving fault-tolerant quantum computing shortly.
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