Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator
We propose and demonstrate a read-out technique for a superconducting qubit by dispersively coupling it with a Josephson parametric oscillator. We employ a tunable quarter wavelength superconducting resonator and modulate its resonant frequency at twice its value with an amplitude surpassing the thr...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2017
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| Online Access: | http://hdl.handle.net/1721.1/110558 https://orcid.org/0000-0002-7069-1025 |
| _version_ | 1826203853633093632 |
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| author | Krantz, Philip Bengtsson, Andreas Simoen, Michaël Shumeiko, Vitaly Wilson, C. M. Delsing, Per Bylander, Jonas Gustavsson, Simon Oliver, William D |
| author2 | Lincoln Laboratory |
| author_facet | Lincoln Laboratory Krantz, Philip Bengtsson, Andreas Simoen, Michaël Shumeiko, Vitaly Wilson, C. M. Delsing, Per Bylander, Jonas Gustavsson, Simon Oliver, William D |
| author_sort | Krantz, Philip |
| collection | MIT |
| description | We propose and demonstrate a read-out technique for a superconducting qubit by dispersively coupling it with a Josephson parametric oscillator. We employ a tunable quarter wavelength superconducting resonator and modulate its resonant frequency at twice its value with an amplitude surpassing the threshold for parametric instability. We map the qubit states onto two distinct states of classical parametric oscillation: one oscillating state, with 185±15 photons in the resonator, and one with zero oscillation amplitude. This high contrast obviates a following quantum-limited amplifier. We demonstrate proof-of-principle, single-shot read-out performance, and present an error budget indicating that this method can surpass the fidelity threshold required for quantum computing. |
| first_indexed | 2024-09-23T12:44:19Z |
| format | Article |
| id | mit-1721.1/110558 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:44:19Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1105582022-10-01T10:51:08Z Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator Krantz, Philip Bengtsson, Andreas Simoen, Michaël Shumeiko, Vitaly Wilson, C. M. Delsing, Per Bylander, Jonas Gustavsson, Simon Oliver, William D Lincoln Laboratory Massachusetts Institute of Technology. Research Laboratory of Electronics Gustavsson, Simon Oliver, William D We propose and demonstrate a read-out technique for a superconducting qubit by dispersively coupling it with a Josephson parametric oscillator. We employ a tunable quarter wavelength superconducting resonator and modulate its resonant frequency at twice its value with an amplitude surpassing the threshold for parametric instability. We map the qubit states onto two distinct states of classical parametric oscillation: one oscillating state, with 185±15 photons in the resonator, and one with zero oscillation amplitude. This high contrast obviates a following quantum-limited amplifier. We demonstrate proof-of-principle, single-shot read-out performance, and present an error budget indicating that this method can surpass the fidelity threshold required for quantum computing. Office of the Assistant Secretary of Defense for Research and Engineering (Contract FA8721-05-C-0002) 2017-07-07T19:04:02Z 2017-07-07T19:04:02Z 2016-05 2015-10 Article http://purl.org/eprint/type/JournalArticle 2041-1723 http://hdl.handle.net/1721.1/110558 Krantz, Philip et al. “Single-Shot Read-out of a Superconducting Qubit Using a Josephson Parametric Oscillator.” Nature Communications 7 (2016): 11417. © 2017 Macmillan Publishers Limited https://orcid.org/0000-0002-7069-1025 en_US http://dx.doi.org/10.1038/ncomms11417 Nature Communications Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature |
| spellingShingle | Krantz, Philip Bengtsson, Andreas Simoen, Michaël Shumeiko, Vitaly Wilson, C. M. Delsing, Per Bylander, Jonas Gustavsson, Simon Oliver, William D Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator |
| title | Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator |
| title_full | Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator |
| title_fullStr | Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator |
| title_full_unstemmed | Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator |
| title_short | Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator |
| title_sort | single shot read out of a superconducting qubit using a josephson parametric oscillator |
| url | http://hdl.handle.net/1721.1/110558 https://orcid.org/0000-0002-7069-1025 |
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