Quantum Dynamics of a Microwave Driven Superconducting Phase Qubit Coupled to a Two-Level System

Details Quantum Dynamics of a Microwave Driven Superconducting Phase Qubit Coupled to a Two-Level System Quantum Dynamics of a Microwave Driven Superconducting Phase Qubit Coupled to a Two-Level System

2010-04-26

arxiv.org/abs/1004.4664v4

Physical Review B 82, 132501 (2010)

Physics

Condensed Matter

Superconductivity

6 pages, 3 figures

Scientific paper

10.1103/PhysRevB.82.132501

We present an analytical and comprehensive description of the quantum dynamics of a microwave resonantly driven superconducting phase qubit coupled to a microscopic two-level system (TLS), covering a wide range of the external microwave field strength. Our model predicts several interesting phenomena in such an ac driven four-level bipartite system including anomalous Rabi oscillations, high-contrast beatings of Rabi oscillations, and extraordinary two-photon transitions. Our experimental results in a coupled qubit-TLS system agree quantitatively very well with the predictions of the theoretical model.

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