SAFE uses a weak off-resonant drive on a flux-tunable transmon to create a dynamical sweet spot where cavity frequency fluctuations from flux noise are cancelled, extending simulated cavity dephasing times by over an order of magnitude.
Kg4 ∆5 bc 2 + 3∆bc ∆bd −126 K2g6 ∆8 bc # + 42(n3−m 3)K2g6 ∆8 bc ) ∂ωb ∂Φ ≈
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Dynamically suppressing cavity dephasing induced by frequency fluctuations of a coupled nonlinear mode
SAFE uses a weak off-resonant drive on a flux-tunable transmon to create a dynamical sweet spot where cavity frequency fluctuations from flux noise are cancelled, extending simulated cavity dephasing times by over an order of magnitude.