Maximal coin-position entanglement generation in a quantum walk for the third step and beyond regardless of the initial state

XX Fang, K An, BT Zhang, BC Sanders, H Lu - Physical Review A, 2023‏ - APS
We study maximal coin-position entanglement generation via a discrete-time quantum walk,
in which the coin operation is randomly selected from one of two coin operators set at each …

Locating sources of Szegedy's quantum network

HJ Wang, ZL Hu, SY Shao, FF Zhang, L Tao - Physical Review E, 2024‏ - APS
Source location in quantum networks is a critical area of research with profound implications
for cutting-edge fields such as quantum state tomography, quantum computing, and …

Enhancing entanglement with the generalized elephant quantum walk from localized and delocalized states

CB Naves, MA Pires, DO Soares-Pinto, SMD Queirós - Physical Review A, 2022‏ - APS
Recently, a generalization of a nonstandard step operator named the elephant quantum
walk (EQW) was introduced. With proper statistical distribution for the steps, that generalized …

Wave packet spreading with periodic, Fibonacci quasiperiodic, and random nonlinear discrete-time quantum walks

L Gong, X Guo, J Sun, W Cheng, S Zhao - Quantum Information …, 2022‏ - Springer
We consider a nonlinear discrete-time quantum walk whose coin operator temporally
changes according to periodic, Fibonacci quasiperiodic, and random sequences …

Locating sources of complex quantum networks

W Hongjue, Z Fangfeng - New Journal of Physics, 2022‏ - iopscience.iop.org
The source location of quantum network is an important basic research in the direction of
quantum networks, which has important scientific and application values in the frontier fields …

Localization in quantum walks with a single lattice defect: A comparative study

LI da S. Teles, EPM Amorim - Brazilian Journal of Physics, 2021‏ - Springer
We study how a single lattice defect in a discrete time quantum walk affects the return
probability of a quantum particle. This defect at the starting position is modeled by a …

Statistics of Floquet quasienergy spectrum for one-dimensional periodic, Fibonacci quasiperiodic and random discrete-time quantum walks

L Gong, J Sun, X Guo, W Cheng, S Zhao - The European Physical Journal …, 2022‏ - Springer
Discrete-time quantum walks are Floquet systems if the quantum walk operator is
independent of time. We consider such one-dimensional quantum walks with two quantum …