density-matrix

This repository contains a new backend which can simulate noisy quantum logic circuits using the density matrix formalism.

Mandala is an E(3)-Equivariant Graph Neural Network Framework for Learning Electronic-Structure Operators with Observable Guidance based on e3nn.

UWM-JEPA: a JEPA world model with a density-matrix latent and learned unitary predictor for imagining hidden continuations under partial observability.

A basic quantum computing package written in MATLAB. Uses the density matrix backend for gate/channel operations.

Python utilities for running density matrix functional theory (DMFT) quantum chemical calculations.

We provide a density matrix framework to study Anderson localization and interplay between disorder and electronic interactions.

Fast-trace algorithm to compute reduced density matrices within (cluster) dynamical mean-field theory. Exported to @QcmPlab / CDMFT-LANC-ED.

Highly efficient toolbox for large scale qubit dynamic simulation

Quantum Computing simulation using C++

An open-source multi-core neuromorphic simulator using genetic algorithms to mitigate crystal-field Stark distortions in room-temperature Thorium-229 nuclear clock transitions

DeePTB: A deep learning package for tight-binding approach with ab initio accuracy.

An interactive, browser-based tool for generating and solving optical Bloch equations for multilevel quantum systems. Users can configure atomic or molecular systems, visualize the optical Bloch equations in rotating-wave approximation, and download C source code to solve them using the Runge-Kutta method.

A Julia implementation of the Fermi–Dirac operator (matrix) expansion using different methods

Analytical and computational study of single-qubit unitary dynamics, non-commuting gate algebras, and Bloch sphere trajectories alongside bipartite entanglement synthesis, complete Bell-state tomography, Schmidt decomposition, and subsystem reduced density matrix entropy diagnostics implemented through Qiskit 2.x and Qiskit Aer simulation backends.

3 Qubits Quantum Simulator

An interactive field guide to the mathematics behind quantum computing — from a single qubit to Bell correlations.

Quantum information geometry primitives

This project implements a machine learning model capable of reconstructing a quantum density matrix ρ from measurement data (Classical Shadows). The model enforces strict physical constraints (Hermitian, Positive Semi-Definite, Unit Trace) using a Cholesky decomposition approach.

a ML-SQM method

Projeto de iniciação científica que utiliza os conceitos de mecânica quântica moderna e controle não linear para resolver problemas de sistemas quânticos abertos