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Paper Abstract and Keywords
Presentation 2018-11-26 13:30
[Poster Presentation] Existence of a pure initial state reproducing the time evolution of the quantum open system
Koki Inoue, Yoshiyuki Fukumoto (Tokyo univ. of science)
Abstract (in Japanese) (See Japanese page) 
(in English) It is known that an arbitrary quantum state can always be expressed in a pure state by preparing an appropriate ancilla system, which is called purification. The purification can always be performed when considering only quantity not dependent on the quantum state of the ancilla system. However, if we consider quantity dependent on the quantum state of the ancilla system, it is not clear whether the purification is possible or not. In this study, we focus on the cases where the quantum system S and the ancilla system are interactive with each other, and investigate whether purification, which correctly reproduces the time evolution of the system S, is possible. As a result, when the ancilla system is a macro system, we show that this purification is possible for a specific initial state.
Keyword (in Japanese) (See Japanese page) 
(in English) purification / TPCP map / macroscopic quantum system / open quantum system / / / /  
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Conference Information
Committee QIT  
Conference Date 2018-11-26 - 2018-11-27 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Tokyo 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2018-11-QIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Existence of a pure initial state reproducing the time evolution of the quantum open system 
Sub Title (in English)  
Keyword(1) purification  
Keyword(2) TPCP map  
Keyword(3) macroscopic quantum system  
Keyword(4) open quantum system  
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1st Author's Name Koki Inoue  
1st Author's Affiliation Tokyo university of science (Tokyo univ. of science)
2nd Author's Name Yoshiyuki Fukumoto  
2nd Author's Affiliation Tokyo university of science (Tokyo univ. of science)
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Speaker Author-1 
Date Time 2018-11-26 13:30:00 
Presentation Time 120 minutes 
Registration for QIT 
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