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Paper Abstract and Keywords
Presentation 2015-11-24 13:40
[Poster Presentation] Distinguishability of countably many states
Ryuitiro Kawakubo, Tatsuhiko Koike (Keio Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) First, we drive a necessary and sufficient condition for countably many states being distinguishable,
where we define distinguishability as possibility of an unambiguous discrimination on the states.
The condition is minimality or Riesz-Fischer property, which is akin to linear independence.
Second, we investigate the von Neumann lattices,
which are the families of coherent states corresponding to two-dimensional lattices in the classical phase space.
Owing to the criteria presented in the first part of this paper, we see a drastic change in distinguishability of the states
when the fundamental region of the lattice became the Planck constant $h$.
Keyword (in Japanese) (See Japanese page) 
(in English) unambiguous discrimination / Riesz-Fischer sequence / von Neumann lattice / / / / /  
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Conference Information
Committee QIT  
Conference Date 2015-11-24 - 2015-11-25 
Place (in Japanese) (See Japanese page) 
Place (in English) NTT Atsugi R&D center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2015-11-QIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Distinguishability of countably many states 
Sub Title (in English)  
Keyword(1) unambiguous discrimination  
Keyword(2) Riesz-Fischer sequence  
Keyword(3) von Neumann lattice  
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1st Author's Name Ryuitiro Kawakubo  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Tatsuhiko Koike  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2015-11-24 13:40:00 
Presentation Time 90 minutes 
Registration for QIT 
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