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Paper Abstract and Keywords
Presentation 2014-11-17 17:00
Non-classical correlation between measurement errors and back-action effects in quantum measurement of photon polarization
Masataka Iinuma, Yutaro Suzuki, Taiki Nii, Ryuji Kinoshita, Holger F. Hofmann (Hiroshima Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) The measurement errors defined in Ozawa’s inequality appear to be equivalent to classical errors in the special case of two-level systems, so they can be evaluated easily using only classical statistics. However, it is shown that the contribution of non-classical correlation between the measurement outcome and additional data obtained from the output can reduce the measurement errors based on the additional information regarding a complementary observable. For pure states, the error can then be ideally reduced to zero. We estimated the errors for an experimental quantum measurement of photon polarization and confirmed that the errors of estimates that include the output value of a complimentary polarization component are much smaller than errors of the measurement itself.
Keyword (in Japanese) (See Japanese page) 
(in English) quantum measurement / photon / polarization / measurement error / disturbance / non-classical correlation / variable strength measurement /  
Reference Info. IEICE Tech. Rep.
Paper #  
Date of Issue  
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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 Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Non-classical correlation between measurement errors and back-action effects in quantum measurement of photon polarization 
Sub Title (in English)  
Keyword(1) quantum measurement  
Keyword(2) photon  
Keyword(3) polarization  
Keyword(4) measurement error  
Keyword(5) disturbance  
Keyword(6) non-classical correlation  
Keyword(7) variable strength measurement  
1st Author's Name Masataka Iinuma  
1st Author's Affiliation Hiroshima University (Hiroshima Univ.)
2nd Author's Name Yutaro Suzuki  
2nd Author's Affiliation Hiroshima University (Hiroshima Univ.)
3rd Author's Name Taiki Nii  
3rd Author's Affiliation Hiroshima University (Hiroshima Univ.)
4th Author's Name Ryuji Kinoshita  
4th Author's Affiliation Hiroshima University (Hiroshima Univ.)
5th Author's Name Holger F. Hofmann  
5th Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Speaker Author-1 
Date Time 2014-11-17 17:00:00 
Presentation Time 20 minutes 
Registration for QIT 
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