Rapid characterization of microscopic two-level systems using Landau-Zener transitions in a superconducting qubit
- National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093 (China)
- Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States)
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.
- OSTI ID:
- 22482044
- Journal Information:
- Applied Physics Letters, Vol. 107, Issue 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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