pyCTQW swMATH ID: 16801 Software Authors: Izaac, Josh A.; Wang, Jingbo B. Description: pyCTQW: a continuous-time quantum walk simulator on distributed memory computers. In the general field of quantum information and computation, quantum walks are playing an increasingly important role in constructing physical models and quantum algorithms. We have recently developed a distributed memory software package pyCTQW, with an object-oriented Python interface, that allows efficient simulation of large multi-particle CTQW (continuous-time quantum walk)-based systems. In this paper, we present an introduction to the Python and Fortran interfaces of pyCTQW, discuss various numerical methods of calculating the matrix exponential, and demonstrate the performance behavior of pyCTQW on a distributed memory cluster. In particular, the Chebyshev and Krylov-subspace methods for calculating the quantum walk propagation are provided, as well as methods for visualization and data analysis. Homepage: http://cpc.cs.qub.ac.uk/summaries/AEUN_v1_0.html Keywords: continuous-time quantum walk; multiple walkers; Pad\'e approximant; Krylov subspace method; Chebyshev matrix expansion Related Software: QSWalk.m; qwViz; QWalk; Expokit; QSWalk; LightGraphs.jl; PyPlot.jl; Julia; cuQuWa; Sailfish; CULA; cuRAND; CUBLAS; CUDA; MATLAB expm; F2PY; PETSc; SLEPc Cited in: 3 Publications Standard Articles 1 Publication describing the Software, including 1 Publication in zbMATH Year pyCTQW: a continuous-time quantum walk simulator on distributed memory computers. Zbl 1344.81019Izaac, Josh A.; Wang, Jingbo B. 2015 all top 5 Cited by 10 Authors 1 Benedetti, Claudia 1 Bordone, Paolo 1 Garhwal, Sunita 1 Izaac, Josh A. 1 Kadian, Karuna 1 Kumar, Ajay 1 Paris, Matteo G. A. 1 Piccinini, Enrico 1 Siloi, Ilaria 1 Wang, Jingbo B. Cited in 2 Serials 2 Computer Physics Communications 1 Computer Science Review Cited in 2 Fields 3 Quantum theory (81-XX) 1 Computer science (68-XX) Citations by Year