Protecting Quantum Information via Destructive Interference of Correlated Noise
arXiv:2312.02267 · doi:10.1103/PhysRevLett.132.223601
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 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.
Main: 5 pages, 5 figures; SM: 16 pages, 10 figures
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- Efficiency of optimal control for noisy spin qubits in diamond
- Overcoming frequency resolution limits using a solid-state spin quantum sensor
- Robust gigahertz-range ac magnetometry with an ensemble of NV centers in diamond using concatenated continuous dynamical decoupling
- On the query complexity of unitary channel certification