Decoherence of a qubit by non-Gaussian noise at an arbitrary working point

Abstract

The decoherence of a qubit due to a classical non-Gaussian noise with correlation time longer than the decoherence time is discussed for arbitrary working points of the qubit. A method is developed that allows an exact formula for the phase memory functional in the presence of independent random telegraph noise sources to be derived.

12 pages, 7 figures

References in corpus (3)

• Low-frequency noise as a source of dephasing of a qubit
• Dephasing of solid-state qubits at optimal points
• Dynamical suppression of telegraph and 1/f noise due to quantum bistable fluctuator

Cited by in corpus (8)

• How to Enhance Dephasing Time in Superconducting Qubits
• Decoherence in qubits due to low-frequency noise
• Robust optimal quantum gates for Josephson charge qubits
• Coherence of an optically illuminated single nuclear spin qubit
• Characterization of coherent impurity effects in solid state qubits
• Exact solution of a model of qubit dephasing due to telegraph noise
• Non-Gaussian dephasing in flux qubits due to 1/f-noise
• Nonlinearly driven Landau-Zener transition with telegraph noise