Error-Tolerant Qubits Built Using Antimony Atoms
2025-02-09
Researchers from UNSW Sydney and the University of Melbourne have developed a novel qubit using an antimony atom embedded in a silicon chip. Unlike standard qubits, the antimony atom's eight nuclear spin states allow for six ancillary states, significantly mitigating error accumulation. Two states encode information (0 and 1), while errors push the qubit to the ancillary states, delaying information loss – akin to a 'cat with seven extra lives'. This approach offers a new path towards fault-tolerant quantum computing, with the results published in Nature Physics.