Qiskit v2.5 Release Enables Multi-Representation Compilation Workflows and New Name IBM Quantum Compute Service

The Qiskit team has released version 2.5 of its open-source quantum software development kit, introducing a new compiler framework designed to enable multi-representation compilation workflows. This update addresses a key gap in interoperability by expanding the C Application Programming Interface (API) to now support inspection of the same control-flow operations available through Qiskit’s ControlFlowOp hierarchy, including if/else, while, for, switch, break, and continue instructions. The team states that alongside these improvements, Qiskit Runtime Service is now officially the IBM Quantum Compute Service, a platform naming update intended to clarify the distinction between the open-source SDK and IBM’s quantum services. Classical control flow in the C API. You can now inspect classical control flow instructions used in dynamic circuits directly from C. This fills one of the biggest remaining gaps between the C API and Python for Qiskit’s core data model. Multi-representation compiler framework. New abstractions let you build compilation pipelines that move between different intermediate representations (IR)—an important capability for domain-specific workflows, complex FTQC (fault-tolerant quantum computing) compiler flows, and more. Dedicated fault-tolerant pipelines. New preset…