Protecting Quantum Information via Destructive Interference of Correlated Noise
Alon Salhov, Qingyun Cao, Jianming Cai, Alex Retzker, Fedor Jelezko, Genko T. Genov
Abstract
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 uses the cross-correlation of two noise sources. Utilizing destructive interference of cross-correlated noise extends the coherence time tenfold, improves control fidelity, and surpasses the state-of-the-art sensitivity for high frequency quantum sensing, significantly expanding the applicability of noise protection strategies.
Topics & Concepts
Quantum decoherenceNoise (video)FidelityInterference (communication)Coherence (philosophical gambling strategy)Statistical physicsQuantumAutocorrelationComputer scienceQuantum noisePhysicsSensitivity (control systems)Quantum sensorQuantum informationQuantum mechanicsElectronic engineeringQuantum networkTelecommunicationsArtificial intelligenceMathematicsStatisticsChannel (broadcasting)EngineeringImage (mathematics)Quantum Information and CryptographyQuantum optics and atomic interactionsDiamond and Carbon-based Materials Research