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Rapid characterization of microscopic two-level systems using Landau-Zener transitions in a superconducting qubit
Tan, Xinsheng Yu, Haifeng Yu, Yang Han, Siyuan
Tan, Xinsheng
Yu, Haifeng
Yu, Yang
Han, Siyuan
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Abstract
We demonstrate a fast method to detect microscopic two-level systems in a superconducting phase qubit. By monitoring the population leak after sweeping the qubit bias flux, we are able to measure the two-level systems that are coupled with the qubit. Compared with the traditional method that detects two-level systems by energy spectroscopy, our method is faster and more sensitive. This method supplies a useful tool to investigate two-level systems in solid-state qubits.
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This is the published version. Copyright 2015 American Institute of Physics
Date
2015-01
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American Institute of Physics
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Keywords
Qubits, Superconductivity, High resolution spectroscopy, Relaxation times, Dephasing
Citation
Tan, Xinsheng, Haifeng Yu, Yang Yu, and Siyuan Han. "Rapid Characterization of Microscopic Two-level Systems Using Landau-Zener Transitions in a Superconducting Qubit." Appl. Phys. Lett. Applied Physics Letters 107.10 (2015): 102601. http://dx.doi.org/10.1063/1.4930201.