Randomization holds quantum coherence steady in noisy environment

Researchers report that randomized compiling can improve output fidelity in quantum circuits by converting coherent, gate-correlated noise into less harmful stochastic errors.

The approach is especially useful for near-term systems such as superconducting qubits and NISQ devices, where full error correction is not yet practical.

Its benefits are strongest when noise is coherent and gate-specific, but it is less effective against drift, leakage, and deeper circuits.

The findings highlight a low-overhead error-mitigation tool that could make variational algorithms and other short quantum workloads more reliable.