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Paper Abstract and Keywords
Presentation 2014-11-17 15:20
Witnessing Single-System Steering
Che-Ming Li (NCKU)
Abstract (in Japanese) (See Japanese page) 
(in English) Einstein-Podolsky-Rosen (EPR) steering describes different ensembles of quantum states can be remotely prepared by measuring one particle of an entangled pair. Here, inspired by this bipartite concept, we investigate quantum steering for single quantum d-level systems (qudits) and devise novel quantum witnesses to efficiently verify the steerability therein. Our steering witnesses enable unambiguously rule out the possibilities using generic classical means of initial state preparation and intermediate state transition (or transmission) for the single systems. Such feature ensures security against cloning-based individual attack and coherent attacks for quantum key distribution using qudits. Furthermore, the steering witnesses can serve as efficient criterion for the evaluation of experimentally realized operations of quantum logic gate with arbitrary computing size. In particular, they also provide bipartite counterparts of novel EPR steering witnesses for faithful one-way quantum computation and secure entanglement-based quantum communication.
Keyword (in Japanese) (See Japanese page) 
(in English) Quantum steering / Quantum key distribution / Quantum computation / / / / /  
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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) Witnessing Single-System Steering 
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Keyword(1) Quantum steering  
Keyword(2) Quantum key distribution  
Keyword(3) Quantum computation  
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1st Author's Name Che-Ming Li  
1st Author's Affiliation National Cheng Kung University (NCKU)
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Speaker Author-1 
Date Time 2014-11-17 15:20:00 
Presentation Time 20 minutes 
Registration for QIT 
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