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Paper Abstract and Keywords
Presentation 2021-05-24 12:10
Tighter lower bounds of the error probability of multiple quantum channel discrimination
Ryo Ito, Ryuhei Mori (Tokyo Tech)
Abstract (in Japanese) (See Japanese page) 
(in English) We give lower bounds of the error probability of general multiple quantum channel discrimination problem for a given number of queries. The proof of our bound is a generalization of the optimality proof of Grover's search given by Zalka.
Moreover, we show another lower bound of the error probability of two quantum channel discrimination by generalizing that of two unitary channel discrimination. For two amplitude damping channel discrimination,
our lower bound is analytic and tighter than a known lower bound.
Keyword (in Japanese) (See Japanese page) 
(in English) Quantum algorithms / Quantum information theory / Query complexity / / / / /  
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Conference Information
Committee QIT  
Conference Date 2021-05-24 - 2021-05-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2021-05-QIT 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Tighter lower bounds of the error probability of multiple quantum channel discrimination 
Sub Title (in English)  
Keyword(1) Quantum algorithms  
Keyword(2) Quantum information theory  
Keyword(3) Query complexity  
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1st Author's Name Ryo Ito  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Ryuhei Mori  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2021-05-24 12:10:00 
Presentation Time 20 minutes 
Registration for QIT 
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