Researchers from the University of Sydney and IBM have pinpointed mid-circuit measurement noise as a significant obstacle to achieving reliable quantum error correction, a crucial component of high-fidelity quantum computing. By redesigning circuits, the team was able to improve the performance of logical qubits, demonstrating a significant increase in survival rates from below 90% to over 96% per error-correction cycle using IBM's 156-qubit Heron r2 superconducting processor1. This breakthrough suggests that mitigating measurement-related idling noise will be a key engineering priority for scaling fault-tolerant quantum computers. The study's findings have significant implications for the development of quantum computing, particularly in relation to cryptographic migration and the need for post-quantum cryptography planning. As a result, the urgency to prepare for the potential disruption of current cryptographic systems increases, making it essential for practitioners to prioritize quantum-resistant cryptography solutions.