A fidelity of 0. 758, achieved using a depth-8 decoder, now exceeds the classical limit of two-thirds for quantum information recovery. This demonstrates that seemingly lost quantum data can be refocused using only local controls, a feat previously unattainable with single-qubit methods or limited-range comparisons.
Team Recovers Quantum Memory Using Local Control
A fidelity of 0. 758, achieved using a depth-8 decoder, now exceeds the classical limit of two-thirds for quantum information recovery. This demonstrates that seemingly lost quantum data can be refocused using only local controls, a feat previously unattainable with single-qubit methods or limited-range comparisons.