Q

quantum

QuantumPay is an open-source, next-generation payment network designed for fast, secure, and transparent transactions. It supports multi-currency payments, smart contracts, developer-friendly APIs, and community-driven governance, redefining the future of global finance.

QGuardian Registry is an open-source quantum hardware compatibility layer that standardizes and indexes quantum device capabilities—such as native gate sets, qubit topology, and fidelity metrics—to enable automatic hardware discovery, matching, and integration across the quantum computing ecosystem.

QGuardian — Fidelity First is an open-source quantum computing platform that ensures reliable and reproducible execution of quantum circuits by automatically matching circuits to compatible hardware, enforcing fidelity thresholds, and reducing errors through native gate awareness and global hardware profiling.

"The Quantum Ad-List: AI-Powered Precision Blocking"

A cutting-edge, AI-curated blocklist featuring 3,000,000+ domains associated with ads, trackers, malware, and cryptojacking. Built using autonomous machine learning algorithms, our system dynamically analyzes and classifies domains with unparalleled accuracy, like a high-performance detector eliminating digital noise.

The ultimate solution for ad-free, private, and secure browsing. 🚀

Measurement scripts for SQUAD Lab

A Rust program for Quantum Symbolic Symmetry. https://qsym2.dev

Plot your spicy quantum measurements with Qimchi

Spatial Superposition

A theoretical framework for directing quantum measurement collapse through location based field manipulation — the quantum control layer beneath silicon computation.

Mirror of

https://github.com/Christopher-K-Long/QuGrad

A Python package for quantum optimal control.

https://QuGrad.readthedocs.io

Framework for controlling QKD devices and managing symmetric keys. See the project page here

A mirror of

https://github.com/Christopher-K-Long/Suzuki-Trotter-Evolver

A C++ header-only library for evolving states under the Schrödinger equation using first-order Suzuki-Trotter and computing switching functions.

https://Suzuki-Trotter-Evolver.readthedocs.io/

Mirror of

https://github.com/Christopher-K-Long/Minimal-state-preparation-times-for-silicon-spin-qubits-source-code

The source code required to reproduce and plot the data presented in:

https://doi.org/10.1038/s41534-025-01027-8

Mirror of

https://github.com/Christopher-K-Long/From-virtual-Z-gates-to-virtual-Z-pulses-source-code

The source code required to reproduce and plot the data presented in:

https://arxiv.org/abs/2509.13453

A mirror of

https://github.com/Christopher-K-Long/PySTE

A Python package for evolving unitaries and states under the Schrödinger equation using first-order Suzuki-Trotter and computing switching functions.

https://PySTE.readthedocs.io

SuperConga: Superconductivity simulation framework on GPU.

This includes projects on lexical analysis using Lex, parsing with Lex and Yacc, exploring quantum circuits and registers, and practising skills related to context-free languages. Additionally, it programs a Turing machine, with specific instructions for using the Tuatara simulator version 2.1.

qocttools package, designed to be used on top of qutip. It implements a number quantum optimal control utilities.

See the documentation for the latest stable version at https://qocttools.readthedocs.io/

See the documentation for the latest developer's version at https://acbarrigon.gitlab.io/qocttools/

Investigation of numerical methods for damping reflections of quantum waves on numerical boundaries for Schrödinger equation.

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Quantum computation library in C++