IBM Launches Directed Execution Model and Executor Primitive to Give Researchers Client-Side Control Over QEC Workflows

IBM Quantum has introduced a new, low-level execution framework known as the directed execution model, powered by a new Executor primitive in qiskit-ibm-runtime v0.50.0. The framework transitions error mitigation logic—previously executed as a server-side black box—onto the client side, granting researchers explicit, composable control over circuit transformations, twirling, and error-correction pipelines on utility-scale hardware.

The directed execution model is designed for algorithm developers, hardware characterization experts, and quantum error correction (QEC) researchers who require custom control over large families of circuit variants. Rather than manually generating thousands of randomized circuits on the client and transferring them across the network, directed execution allows developers to define execution blueprints locally using circuit annotations and template parameter tensors, which the Executor primitive processes in the near-time environment of the IBM Quantum Compute Service.

For standard users of Qiskit’s high-level Sampler and Estimator primitives, the upgrade to version 0.50.0 is non-disruptive. Both primitives now run on top of the Executor primitive as a client-side wrapper. This transition allows users to inspect and customize resilience options (such as TREX readout error mitigation) directly in local simulation modes before committing jobs to physical QPUs.