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arXiv · 0807.0766

Quantum Jumps between Macroscopic Quantum States of a Superconducting Qubit Coupled to a Microscopic Two-Level System

Yang Yu·Shi-Liang Zhu·Guozhu Sun·Xueda Wen·Ning Dong·Jian Chen·Peiheng Wu·Siyuan Han
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Abstract

We report the observation of quantum jumps between macroscopic quantum states in a superconducting phase qubit coupled to the two-level systems in the Josephson tunnel junction, and all key features of quantum jumps are confirmed in the experiments. Moreover, quantum jumps can be used to calibrate such two-level systems, which are believed to be one of the main decoherence sources in Josephson devices.

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Yang Yu, Shi-Liang Zhu, Guozhu Sun, Xueda Wen, Ning Dong, Jian Chen, Peiheng Wu, Siyuan Han. 2008-10-07. Quantum Jumps between Macroscopic Quantum States of a Superconducting Qubit Coupled to a Microscopic Two-Level System. https://doi.org/10.1103/physrevlett.101.157001

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