TY - JOUR
T1 - Emergence of randomness and arrow of time in quantum walks
AU - Shikano, Yutaka
AU - Chisaki, Kota
AU - Segawa, Etsuo
AU - Konno, Norio
PY - 2010/6/28
Y1 - 2010/6/28
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevA.81.062129
DO - 10.1103/PhysRevA.81.062129
M3 - Article
AN - SCOPUS:77954184004
VL - 81
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 6
M1 - 062129
ER -