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Paper Abstract and Keywords
Presentation 2022-05-30 13:30
[Poster Presentation] Toward Realization of a Two-dimensional Quantum Walk with Helical Boundary Conditions I -- Generation and Evaluation of Petal-shaped Beams --
Yutaro Okamoto (Kyoto Univ.), Hideaki Obuse (Hokkaido Univ.), Shigeki Takeuchi, Ryo Okamoto (Kyoto Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Quantum walk is a quantum version of random walk and is expected to have applications in quantum simulation and quantum computation. Using photons, the unitary transformations required for quantum walks are relatively easy to realize. Therefore, many experiments of quantum walks have been performed using photons. However, almost all experiments have been carried out under absorbing boundary conditions, where photons are lost at the boundaries. Hence, we aim to realize a two-dimensional quantum walk with new boundary conditions keeping photons in the system, called helical boundary conditions. Two-dimensional quantum walks with helical boundary conditions have translation invariance and are expected to have attractive applications such as novel kinds of quantum simulations and implementation of quantum search algorithms. In this study, we propose a method to implement a photonic quantum walk with helical boundary conditions, and report on the generation and evaluation of light with petal-shaped spatial modes which is the key to its realization.
Keyword (in Japanese) (See Japanese page) 
(in English) quantum walk / quantum optics / quantum computation / / / / /  
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Conference Information
Committee QIT  
Conference Date 2022-05-30 - 2022-05-31 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2022-05-QIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Toward Realization of a Two-dimensional Quantum Walk with Helical Boundary Conditions I 
Sub Title (in English) Generation and Evaluation of Petal-shaped Beams 
Keyword(1) quantum walk  
Keyword(2) quantum optics  
Keyword(3) quantum computation  
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1st Author's Name Yutaro Okamoto  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Hideaki Obuse  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ.)
3rd Author's Name Shigeki Takeuchi  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
4th Author's Name Ryo Okamoto  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
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Date Time 2022-05-30 13:30:00 
Presentation Time 120 minutes 
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