Decoherence of a solid-state qubit by different noise correlation spectra

• We numerically study the decay of coherences in a solid-state qubit due to an arbitrary environment.
• We focus on the effect of longitudinal and transversal noise.
• We study thermal environments and low-frequency 1/f1/f noise.
• We provide analytical estimations for the decoherence timescales.

The interaction between solid-state qubits and their environmental degrees of freedom produces non-unitary effects like decoherence and dissipation. Uncontrolled decoherence is one of the main obstacles that must be overcome in quantum information processing. We study the dynamical decay of coherences in a solid-state qubit by means of the use of a master equation. We analyse the effects induced by thermal ohmic environments and low-frequency 1/f1/f noise. We focus on the effect of longitudinal and transversal noise on the superconducting qubit's dynamics. Our results can be used to design experimental future setups when manipulating superconducting qubits.