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Paper Abstract and Keywords
Presentation 2012-05-21 17:20
Phase-random states and their approximate generation
Yoshifumi Nakata, Peter S. Turner, Mio Murao (Univ. Tokyo)
Abstract (in Japanese) (See Japanese page) 
(in English) Motivated by studies of typical properties of quantum states in statistical mechanics, we introduce phase-random states, an ensemble of pure states with fixed amplitudes and uniformly distributed phases in a fixed basis. We investigate the simulatability of phase-random states, which is directly related to that of time evolution in closed systems, by studying their entanglement properties. We find that starting from a separable state, time evolutions under Hamiltonians composed of only separable eigenstates generate extremely high entanglement and are difficult to simulate with matrix product states. We also present how to construct approximate phase-random states by quantum circuits composed of diagonal gates.
Keyword (in Japanese) (See Japanese page) 
(in English) Random States / Entanglement / Simulatability by MPS / t-design / / / /  
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Conference Information
Committee QIT  
Conference Date 2012-05-21 - 2012-05-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukui Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2012-05-QIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Phase-random states and their approximate generation 
Sub Title (in English)  
Keyword(1) Random States  
Keyword(2) Entanglement  
Keyword(3) Simulatability by MPS  
Keyword(4) t-design  
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1st Author's Name Yoshifumi Nakata  
1st Author's Affiliation University of Tokyo (Univ. Tokyo)
2nd Author's Name Peter S. Turner  
2nd Author's Affiliation University of Tokyo (Univ. Tokyo)
3rd Author's Name Mio Murao  
3rd Author's Affiliation University of Tokyo (Univ. Tokyo)
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Speaker Author-1 
Date Time 2012-05-21 17:20:00 
Presentation Time 20 minutes 
Registration for QIT 
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