Single-shot error mitigation for clifford circuits

A computer-implemented method, comprising:

• performing, by a device operatively coupled to a processor, a Clifford circuit on a set of data qubits;
• and
• detecting, by the device, an error in performance of the Clifford circuit by measuring a set of check qubits using nested two-sided Pauli checks that sandwich the Clifford circuit, wherein left-side Pauli operators of the nested two-sided Pauli checks are selected randomly without replacement.

A computer program product for facilitating improved single-shot error mitigation for Clifford circuits, the computer program product comprising a non-transitory computer-readable memory having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to:

• perform a Clifford circuit on a set of data qubits;
• and
• detect an error in performance of the Clifford circuit by measuring a set of check qubits using nested two-sided Pauli checks that sandwich the Clifford circuit, wherein left-side Pauli operators of the nested two-sided Pauli checks are selected randomly without replacement.

A computer-implemented method, comprising:

• performing, by a device operatively coupled to a processor, a Clifford circuit on a set of data qubits;
• and
• detecting, by the device, an error in performance of the Clifford circuit by measuring a set of check qubits using nested one-sided Pauli checks that are prior to the Clifford circuit.