Qiskit Deep Dive December 2025

Step into the high-performance era of quantum computing with this essential breakdown of Qiskit v2.2.3, where the core has been rewritten in Rust to double circuit construction speeds and boost transpilation efficiency. You will discover how the new native C++ API eliminates Python overhead for high-performance workflows and why the legacy execute() function has been permanently retired in favor of the modular SamplerV2 and EstimatorV2 primitives. We explain the shift to Primitive Unified Blocks (PUBs) for efficient data passing and how Resilience Levels now automate complex error mitigation like Zero Noise Extrapolation without manual coding. If you are ready to implement Dynamic Circuits with real-time classical logic and prepare for the next generation of error-corrected hardware, this episode provides the roadmap you need.