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About Quantum Entanglement: From Qubits to Bell Tests and Quantum Networks

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A rigorous path through entanglement as real physics: you will build two-qubit state space from tensor products, learn the separability criterion and the Bell states, follow the EPR argument to Bell's inequality and the loophole-free experiments that settled it, and understand why none of it permits signaling. You finish with the working protocols entanglement enables today: teleportation, superdense coding, quantum key distribution, and entangling gates in quantum computers.