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Paper Abstract and Keywords
Presentation 2015-11-25 15:00
Robust Decoy State Generation with a Nested Modulator
Kensuke Nakata, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) In decoy-BB84 quantum key distribution (QKD) protocol, intensity fluctuation of the transmitted optical pulses reduce secure key rate. The main factors of intensity fluctuation are a light source and an intensity modulator (IM). In this study, we focus on the IM and show that fluctuation of modulation signals affects the intensity of the output light. Furthermore, we propose a Nested intensity Modulator (NM) for suppressing the influence of fluctuation of modulation signals and experimentally confirm that the influence is greatly suppressed with the NM.
Keyword (in Japanese) (See Japanese page) 
(in English) Quantum key distribution / Security / Intensity Modulator / / / / /  
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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) Robust Decoy State Generation with a Nested Modulator 
Sub Title (in English)  
Keyword(1) Quantum key distribution  
Keyword(2) Security  
Keyword(3) Intensity Modulator  
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1st Author's Name Kensuke Nakata  
1st Author's Affiliation Hokkaido University (Hokkaido Univ.)
2nd Author's Name Akihisa Tomita  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ.)
3rd Author's Name Atsushi Okamoto  
3rd Author's Affiliation Hokkaido University (Hokkaido Univ.)
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Speaker Author-1 
Date Time 2015-11-25 15:00:00 
Presentation Time 20 minutes 
Registration for QIT 
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