A state-dependent Lindblad jump operator produces qubit readout signal at O(t) rather than O(t^2) by imprinting information on the external radiative amplitude from an initially empty cavity.
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A Fourier-engineered cos(2φ) qubit achieves spectral agreement with theory but its energy relaxation is limited by 1/f flux noise from residual first-harmonic fluctuations, unlike similar fluxonium qubits.
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Qubit Readout via State-Dependent Radiative Linewidths
A state-dependent Lindblad jump operator produces qubit readout signal at O(t) rather than O(t^2) by imprinting information on the external radiative amplitude from an initially empty cavity.
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Coherence limitations of a Fourier-engineered $\cos(2\varphi)$ transmon qubit
A Fourier-engineered cos(2φ) qubit achieves spectral agreement with theory but its energy relaxation is limited by 1/f flux noise from residual first-harmonic fluctuations, unlike similar fluxonium qubits.