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Quantum entanglement entropy and quantum materials A quantum system with subsystem A and its compliment B. For a quantum state, particles in subsystem A are entangled with particles in subsystem B through quantum entanglement. The quantum entanglement entropy is to measure how much particles in a subsystem A are entangled with the rest of particles in the system. Quantum entanglement is a universal feature for quantum materials and thus can be regarded as a fingerprint for various of quantum materials.
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The University of Hong Kong
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