Initial Decoherence in Solid State Qubits

2004/09/30 by G. Falci, A. D'Arrigo, A. D’Arrigo +3
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.94.167002

published as Phys. Rev. Lett. 94, 167002 (2005) · 4 pages, 4 figures. Replaced with published version

openalex publication_date 2005/04/27 · arxiv created 2005/10/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study decoherence due to low frequency noise in Josephson qubits. Non-Markovian classical noise due to switching impurities determines inhomogeneous broadening of the signal. The theory is extended to include effects of high-frequency quantum noise, due to impurities or to the electromagnetic environment. The interplay of slow noise with intrinsically non-Gaussian noise sources may explain the rich physics observed in the spectroscopy and in the dynamics of charge based devices.

Citations

• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• Coherent Quantum Dynamics of a Superconducting Flux Qubit
• Demonstration of conditional gate operation using superconducting charge qubits
• Coherent dynamics of a Josephson charge qubit
• Quantum-state engineering with Josephson-junction devices
• Single-shot measurement of the Josephson charge qubit