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Decoherence and relaxation of a quantum bit in the presence of Rabi oscillations

2002/09/30 by Anatoly Yu. Smirnov
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat

paper · pdf · doi:10.1103/physrevb.67.155104

published as Phys.Rev. B 67, 155104 (2003) · 14 pages; misprints corrected

openalex publication_date 2003/04/11 · arxiv created 2003/06/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The dissipative dynamics of a quantum bit driven by a strong resonant field and interacting with a heat bath is investigated. We derive generalized Bloch equations and find modifications of the qubit's damping rates caused by Rabi oscillations. The nonequilibrium decoherence and relaxation of a phase qubit inductively coupled to a resonant tank circuit is considered as an illustration of the general results.

Citations