Emergence of randomness and arrow of time in quantum walks
Author(s)
Shikano, Yutaka; Chisaki, Kota; Segawa, Etsuo; Konno, Norio
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Quantum walks are powerful tools not only for constructing the quantum speedup algorithms but also for describing specific models in physical processes. Furthermore, the discrete time quantum walk has been experimentally realized in various setups. We apply the concept of the quantum walk to the problems in quantum foundations. We show that randomness and the arrow of time in the quantum walk gradually emerge by periodic projective measurements from the mathematically obtained limit distribution under the time-scale transformation.
Date issued
2010-06Department
Massachusetts Institute of Technology. Department of Mechanical EngineeringJournal
Physical Review A
Publisher
American Physical Society
Citation
Shikano, Yutaka et al. "Emergence of randomness and arrow of time in quantum walks." Physical Review A 81.6 (2010): 062129. © 2010 The American Physical Society
Version: Final published version
ISSN
1050-2947
1094-1622