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Paper Abstract and Keywords
Presentation 2014-11-18 14:50
Parameter estimation of qubit states with unknown phase parameter
Jun Suzuki (UEC)
Abstract (in Japanese) (See Japanese page) 
(in English) We discuss a problem of parameter estimation for quantum two-level system in presence of
unknown phase parameter (nuisance parameter). We analyze trade-off relations for mean square errors when estimating relevant parameters within i.i.d. setting based on known precision bounds; the symmetric logarithmic derivative Cramer-Rao bound and Nagaoka-Hayashi-Gill-Massar (NHGM) bound. We investigate the optimal measurement which attains the NHGM bound and discuss its properties. We briefly show that the NHGM bound for relevant parameters can be attained asymptotically by using some of i.i.d. quantum systems to estimate the phase parameter.
Keyword (in Japanese) (See Japanese page) 
(in English) Quantum parameter estimation / nuisance parameter / trade-off relation / / / / /  
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Conference Information
Committee QIT  
Conference Date 2014-11-17 - 2014-11-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2014-11-QIT 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Parameter estimation of qubit states with unknown phase parameter 
Sub Title (in English)  
Keyword(1) Quantum parameter estimation  
Keyword(2) nuisance parameter  
Keyword(3) trade-off relation  
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1st Author's Name Jun Suzuki  
1st Author's Affiliation University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2014-11-18 14:50:00 
Presentation Time 20 minutes 
Registration for QIT 
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