This title appears in the Scientific Report :
2020
Please use the identifier:
http://hdl.handle.net/2128/24366 in citations.
Please use the identifier: http://dx.doi.org/10.1038/s41467-020-14548-x in citations.
Energy-level quantization and single-photon control of phase slips in YBa$_{2}$Cu3O$_{7–x}$ nanowires
Energy-level quantization and single-photon control of phase slips in YBa$_{2}$Cu3O$_{7–x}$ nanowires
Significant progress has been made in superconducting quantum circuits. However new quantum devices that have longer decoherence times at higher temperatures are urgently required for quantum technologies. Superconducting nanowires with quantum phase slips are promising candidates for use in novel q...
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Personal Name(s): | Lyatti, Matvey (Corresponding author) |
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Wolff, M. A. / Gundareva, I. / Kruth, M. / Ferrari, S. / Dunin-Borkowski, R. E. / Schuck, C. | |
Contributing Institute: |
Mikrostrukturforschung; PGI-5 Halbleiter-Nanoelektronik; PGI-9 Materialwissenschaft u. Werkstofftechnik; ER-C-2 |
Published in: | Nature Communications, 11 (2020) 1, S. 763 |
Imprint: |
[London]
Nature Publishing Group UK
2020
|
PubMed ID: |
32034143 |
DOI: |
10.1038/s41467-020-14548-x |
Document Type: |
Journal Article |
Research Program: |
Controlling Collective States Electrochemical Storage |
Link: |
Get full text Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1038/s41467-020-14548-x in citations.
Significant progress has been made in superconducting quantum circuits. However new quantum devices that have longer decoherence times at higher temperatures are urgently required for quantum technologies. Superconducting nanowires with quantum phase slips are promising candidates for use in novel quantum devices. Here, we demonstrate YBa2Cu3O7-x nanowires with phase-slip dynamics and study their switching-current statistics at temperatures below 20 K. We apply theoretical models developed for Josephson junctions and show that our results provide strong evidence for energy-level quantization in the nanowires. The crossover temperature to the quantum regime of 12–13 K and the lifetime in the excited state exceeding 20 ms at 5.4 K are superior to those in conventional Josephson junctions. We also show how the absorption of a single photon changes the phase-slip and quantum state of a nanowire, which is important for the development of single-photon detectors with high operating temperature and superior temporal resolution. |