Any quantum code can be turned into a QDSCode to make it single-shot fault tolerant (at the cost of added parity checks and at-most-doubling qubit number). Intuitively, a QDSCode simply uses additional qubits in a secondary code that is "coupled" to the first one to detect syndrome measurement errors.
Any quantum code can be turned into a
QDSCodeto make it single-shot fault tolerant (at the cost of added parity checks and at-most-doubling qubit number). Intuitively, aQDSCodesimply uses additional qubits in a secondary code that is "coupled" to the first one to detect syndrome measurement errors.