Official Julia Codes

Julia packages developed in collaboration with the ITensor team for which we provide full technical support.


ITensors

The core of the ITensor ecosystem. Defines the ITensor type, networks of ITensors, and related operations.

Developers: Matt Fishman, Miles Stoudenmire

PastaQ is a package for quantum computing calculations including tomography, optimization, and simulations.

Developers: Giacomo Torlai, Matt Fishman

ITensorGPU

Package enabling ITensor code to be run on NVIDIA GPUs using the CUDA.jl Julia library backend.

Developers: Katharine Hyatt, Matt Fishman

ITensorGaussianMPS

Tools for transforming Gaussian (non-interacting) states of fermions into matrix product states.

Developers: Matt Fishman

ITensorVisualizationBase

Tools for visualizing tensor networks with multiple graphical backend options including Makie and UnicodePlots.

Developers: Matt Fishman

ITensorInfiniteMPS

Package for optimizing infinite matrix product states (iMPS) with the VUMPS algorithm and working with iMPS.

Developers: Matt Fishman, Loic Herviou



Official C++ Codes

C++ software developed in collaboration with the ITensor team for which we provide full technical support.


ITensor

The core of the ITensor C++ ecosystem. Defines the ITensor type, networks of ITensors, and related operations.

Developers: Miles Stoudenmire, Matt Fishman

TDVP

The official implementation of the time-dependent variational principle (TDVP) algorithm for the C++ version of ITensor.

Developers: Mingru Yang


Experimental Julia Codes

ITensor based Julia codes that are still in development. Please send us your feedback or code contributions.


ITensorNetworks

A package with general tools for working with higher-dimensional tensor networks based on ITensor.

Developers: Matt Fishman

ITensorChemistry

Tools to perform chemistry DMRG and other calculations.

Developers: Matt Fishman, Giacomo Torlai, James Smith

ITensorParallel

Shared and distributed memory parallel MPS algorithms, such as DMRG, TDVP, and TEBD.

Developers: Matt Fishman, Benedikt Kloss, Alex Wietek, James Smith


Community Codes

Codes based on ITensor by other members of our community. While we cannot guarantee or provide technical support for these codes, we still welcome discussion of them in our support forum and encourage users to try out and contribute to these community codes.


DMRGPy

DMRGPy is a Python library built on top of ITensor for DMRG, matrix product states, and other calculations as well as exact diagonalization.

Developers: Jose Lado

LindbladMPO

LindbladMPO implements a solver simulating the time evolution of an open quantum system of coupled two-level qubits, modeled by a Lindblad master equation.

Developers: Haggai Landa, Grégoire Misguich


Other Codes

Codes by the ITensor team or collaborators.


Observers

Helper class for collecting data within iterative calculations.

Developers: Giacomo Torlai, Matt Fishman

SerializedElementArrays

Julia array with elements stored in disk (hard drive) memory.

Developers: Matt Fishman