This site contains a comprehensive document on quantum computers, compiled from 55 internet references. It provides a global overview of the various aspects of quantum computing, without delving into the latest developments in theory and implementation.

The report aims to serve as an accessible entry point for those seeking to understand the foundational principles of quantum computing.

By focusing on a broad overview, the document invites readers to delve into the intriguing challenges and opportunities posed by this revolutionary technology.

The report also touches upon the essential principles of quantum mechanics that underpin quantum computing, such as superposition, entanglement, and quantum gates. These concepts are explained in a way that balances technical depth with accessibility, ensuring that both beginners and those with a foundational knowledge can engage with the material.

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Preface Some preliminary definitions. Definition Kronecker product Qubits and quantum memory. Basic operations on qubits. Bloch sphere.Examples of  transformations (quantum gates) that can be applied. Entanglement.Bell states. Quantum Teleportation.Key Concepts of Multi-Electron Entanglement.Cooper pairs. Key Points about Cooper Pairs.Cooper-pair splitters.Quantum Dots. Hamiltonian. Hamiltonian of an electron in a magnetic field. Bloch sphere positioning. Simon's problem.Example. References.

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