  Decoherence and imperfect control are crucial challenges for quantum
technologies. Common protection strategies rely on noise temporal
autocorrelation, which is not optimal if other correlations are present. We
develop and demonstrate experimentally a strategy that utilizes the
cross-correlation of two noise sources. We achieve a tenfold coherence time
extension by destructive interference of cross-correlated noise, improve
control fidelity, and surpass the state-of-the-art sensitivity for high
frequency quantum sensing, significantly expanding the applicability of noise
protection strategies.
