A DC-voltage-biased Josephson junction circuit is proposed to deliver larger two-to-one photon exchange rates for cat-qubit stabilization while suppressing resonant Kerr and cross-Kerr terms via dynamical averaging.
In other words, we define ˙x = ¯f(x) + ∂ ∂t ˜f(x, t) (E8) where ¯f has no explicit time-dependence and ∂ ∂t ˜f(·, t) has zero time-average; at first order, ˙x ≃ ¯f(x)
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A cat qubit stabilization scheme using a voltage biased Josephson junction
A DC-voltage-biased Josephson junction circuit is proposed to deliver larger two-to-one photon exchange rates for cat-qubit stabilization while suppressing resonant Kerr and cross-Kerr terms via dynamical averaging.