Dynamical decoupling

Dynamical decoupling (DD) is a technique in quantum computing that employs an open-loop decoherence control technique based on high-frequency and high-amplitude periodic controls.^[1] DD can suppress errors in quantum systems by using multiple waves to cancel fluctuations.

Employing periodic repetition of a high-order DD sequence creates a ‘stroboscopic saturation’ of coherence, or coherence plateau that extends the interval over which the fluctuations were overcome, even in the presence of experimental imperfection. This permits device-independent, high-fidelity data storage for computationally useful periods with bounded error probability.^[2]^[3]

References

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