Open AccessQuantum walks in periodically kicked circuit QED lattice
Author(s) -
WenXue Cui,
Yan Xing,
Lu Qi,
Hong Xue,
Shutian Liu,
Shou Zhang,
HongFu Wang
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.390352
Subject(s) - physics , quantum walk , cavity quantum electrodynamics , photon , quantum mechanics , quantum , lattice (music) , quantum information , statistical physics , quantum algorithm , open quantum system , quantum electrodynamics , acoustics
We investigate the quantum walks of a single particle in a one-dimensional periodically kicked circuit quantum electrodynamics lattice. It is found that the dynamic process of the quantum walker is affected by the strength of incommensurate potentials and the driven periods of the system. We calculate the mean square displacement to illustrate the dynamic properties of the quantum walks, which shows that the localized process of the quantum walker presents the zero power-law index distribution. By calculating the mean information entropy, we find that the next-nearest-neighbor interactions have a remarkable deviation effects on the quantum walks and make a more stricter parameter condition for the localization of the quantum walker. Moreover, assisted by the lattice-based cavity input-output process, the localized features of circuit quantum electrodynamics lattice can be observed by measuring the average photon number of the cavity field in the steady state.