Abstract: Systems/techniques that facilitate zero-noise extrapolation of quantum circuit switch statements are provided. In various embodiments, a system can comprise a modification component that can insert quantum gates or pulses in delays of the concurrent switch instructions to cause the delays to satisfy assumptions of zero-noise extrapolation, an execution component that can execute the quantum circuit a plurality of times, wherein a different stretch factor is used to stretch delays of the switch instructions for a subset of executions, and an analysis component that can extrapolate one or more measured observables from the plurality of executions to a zero-delay limit. Furthermore, the analysis component can measure noise within the switch instructions that can violate assumptions of zero-noise extrapolation, and therefore determine a dynamical decoupling sequence to employ based on the measured noise.

Abstract: A method, system, and computer program product for implementing noise mitigation in dynamic quantum circuits. A condition in a dynamic quantum circuit is identified. A condition refers to a situation or circumstance used to identify or detect a source of noise in the dynamic quantum circuit that may result in an error occurring in the dynamic quantum circuit. For example, the condition may correspond to the idling times, spectator qubits, and idling qubits in cross-talk resistant states (quantum states and in the dynamic quantum circuit. Based on the identified condition, a context-dependent dynamical decoupling sequence is inserted in the dynamic quantum circuit. A context-dependent dynamical decoupling sequence refers to a dynamical decoupling sequence that is inserted in the dynamic quantum circuit based on the context, such as the occurrence of a particular operation (e.g., mid-circuit measurement, the occurrence of a feed-forward operation, the occurrence of qubit shuttling).