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QuantumState<Qubit> -> QuantumState<QutritSubspace>
Encode a computational qubit in the non-adjacent |0> and |2> states of a physical transmon qutrit to isolate the |2> to |1> decay channel as a detectable leakage event.
Problem it solves
Standard qubits suffer from unidentifiable amplitude damping errors, which have a lower fault-tolerant threshold than known-location erasure errors.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.