Quantum entanglement
CORRELATION BETWEEN MEASUREMENTS OF QUANTUM SUBSYSTEMS, EVEN WHEN SPATIALLY SEPARATED
Entangled state; Photon entanglement; Brief explanation of entanglement in terms of photons; Quanglement; Spukhafte Fernwirkungen; Spooky action; Quantum Entanglement; Reduced density matrix; Spooky effect; Quantum entangled; Quantum inseparability; Spukhafte Fernwirkung; Electron entanglement; Light entanglement; Entanglement theory; Entanglement (physics); Maximally entangled state; Entangled quantum states; EPR entanglement; Reduced density operator
Quantum entanglement is the physical phenomenon that occurs when a group of particles are generated, interact, or share spatial proximity in a way such that the quantum state of each particle of the group cannot be described independently of the state of the others, including when the particles are separated by a large distance. The topic of quantum entanglement is at the heart of the disparity between classical and quantum physics: entanglement is a primary feature of quantum mechanics not present in classical mechanics.