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Paper Abstract and Keywords
Presentation 2024-11-27 14:30
Fault-tolerance theory of continuous-variable quantum computation under general noise
Takaya Matsuura (RIKEN), Nicolas Menicucci (RMIT), Hayata Yamasaki (U-Tokyo)
Abstract (in Japanese) (See Japanese page) 
(in English) Continuous-variable (CV) quantum error-correcting code has acquired much attention for its flexibility and high tolerance against specific noise. However, the theory of fault tolerance in CV systems is premature and lacks general strategy to translate the noise in CV systems to the noise in logical qubits. In this work, we show that the Markovian-type noise on CV systems is translated into the Markovian-type noise on logical qubits through the Gottesman-Kitaev-Preskill code with an explicit upper bound on the noise strength. Combining this with the established threshold theorem of the concatenated code against Markovian-type noise, we show that the CV quantum computation has a fault-tolerant threshold against general Markovian-type noise. We also give a new insight into the fact that careful management of the energy of the state is required to achieve the fault tolerance in the CV system.
Keyword (in Japanese) (See Japanese page) 
(in English) Continuous-variable system / Quantum computation / Quantum error correction / Quantum fault tolerance / Gottesman-Kitaev-Preskill code / / /  
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Conference Information
Committee QIT  
Conference Date 2024-11-26 - 2024-11-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Sunport Hall Takamatsu 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2024-11-QIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fault-tolerance theory of continuous-variable quantum computation under general noise 
Sub Title (in English)  
Keyword(1) Continuous-variable system  
Keyword(2) Quantum computation  
Keyword(3) Quantum error correction  
Keyword(4) Quantum fault tolerance  
Keyword(5) Gottesman-Kitaev-Preskill code  
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1st Author's Name Takaya Matsuura  
1st Author's Affiliation Institute of Physical and Chemical Research (RIKEN)
2nd Author's Name Nicolas Menicucci  
2nd Author's Affiliation RMIT University (RMIT)
3rd Author's Name Hayata Yamasaki  
3rd Author's Affiliation The University of Tokyo (U-Tokyo)
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Speaker Author-1 
Date Time 2024-11-27 14:30:00 
Presentation Time 20 minutes 
Registration for QIT 
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