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Paper Abstract and Keywords
Presentation 2019-11-19 09:40
Theoretical limits and scaling of quantum edge detection
Naoto Kura, Masahito Ueda (UTokyo)
Abstract (in Japanese) (See Japanese page) 
(in English) Edge detection, one of the fundamental tools in signal processing, is mathematically related to the wavelet transform of signal. In this report, we present a theory of quantum-enhanced edge detection applicable to quantum signals varying over space/time. We extend the ghost imaging into such a method that wavelet coefficients of the signal are directly measured. The ideal measurement error of this method is explained by the uncertainty relation, whence we utilize the advantage of the Heisenberg limit, which is the ultimate error bound in quantum metrology. The condition for this advantage can be derived by means of numerical calculations and function analysis.
Keyword (in Japanese) (See Japanese page) 
(in English) Edge detection / Wavelet transform / Quantum information / Quantum metrology / Heisenberg limit / Ghost imaging / /  
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Conference Information
Committee QIT  
Conference Date 2019-11-18 - 2019-11-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Gakushuin University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2019-11-QIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Theoretical limits and scaling of quantum edge detection 
Sub Title (in English)  
Keyword(1) Edge detection  
Keyword(2) Wavelet transform  
Keyword(3) Quantum information  
Keyword(4) Quantum metrology  
Keyword(5) Heisenberg limit  
Keyword(6) Ghost imaging  
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1st Author's Name Naoto Kura  
1st Author's Affiliation University of Tokyo (UTokyo)
2nd Author's Name Masahito Ueda  
2nd Author's Affiliation University of Tokyo (UTokyo)
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Speaker Author-1 
Date Time 2019-11-19 09:40:00 
Presentation Time 20 minutes 
Registration for QIT 
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