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Paper Abstract and Keywords
Presentation 2018-06-04 13:20
[Poster Presentation] Tracking Quantum Error Correction
kosuke Fukui, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) To implement fault-tolerant quantum computation with continuous variables, the Gottesman–Kitaev–Preskill (GKP) qubit has been recognized as an important technological element. We have proposed a method to reduce the required squeezing level to realize large scale quantum computation with the GKP qubit [arXiv: 1712.00294 (2017)], harnessing the virtue of analog information in the GKP qubits. In the present work, to reduce the number of qubits required for large scale quantum computation, we propose the tracking quantum error correction, where the logical-qubit level quantum errorcorrection is partially substituted by the single-qubit level quantum error correction. In the proposed method, the analog quantum error correction is utilized to make the performances of the single-qubit level quantum error correction almost identical to those of the logical-qubit level quantum error correction in a practical noise level. The numerical results show that the proposed tracking quantum error correction reduces the number of qubits during a quantum error correction process by the reduction rate (n-1)/2n for n-cycles of the quantum error correction process.
Keyword (in Japanese) (See Japanese page) 
(in English) continuous variables / Gottesman-Kitaev-Preskill (GKP) qubit / analog quantum error correction / / / / /  
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Conference Information
Committee QIT  
Conference Date 2018-06-04 - 2018-06-05 
Place (in Japanese) (See Japanese page) 
Place (in English) ICCH Ran 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2018-06-QIT 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Tracking Quantum Error Correction 
Sub Title (in English)  
Keyword(1) continuous variables  
Keyword(2) Gottesman-Kitaev-Preskill (GKP) qubit  
Keyword(3) analog quantum error correction  
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1st Author's Name kosuke Fukui  
1st Author's Affiliation Hokkaido University (Hokkaido Univ.)
2nd Author's Name Akihisa Tomita  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ.)
3rd Author's Name Atsushi Okamoto  
3rd Author's Affiliation Hokkaido University (Hokkaido Univ.)
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Date Time 2018-06-04 13:20:00 
Presentation Time 90 minutes 
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