Quantum interference induced by multiple Landau-Zener transitions in a strongly driven rf-SQUID qubit

Article

关键词: JOSEPHSON-JUNCTION;    INTERFEROMETRY;    OSCILLATIONS;    STATES;   

DOI  :  10.1103/PhysRevB.81.144505

来源: SCIE

【 摘 要 】

We irradiated an rf superconducting quantum interference device qubit with large-amplitude and high-frequency electromagnetic field. Population transitions between macroscopic distinct quantum states due to multiple Landau-Zener transitions at energy-level avoided crossings were observed. The qubit population on the excited states as a function of flux detuning and microwave power exhibits interference patterns. Some features are found in the interference and a model based on rate equations can well address these features.

【 授权许可】

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