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fundamentals
intermediate

Entanglement

Definition

A quantum phenomenon where two or more particles become correlated such that the state of one cannot be described independently of the other, regardless of the distance separating them.

AI Explanation

Examples

  • • Two entangled qubits in a Bell state: measuring one as |0⟩ instantly means the other is |0⟩ too, even if light-years apart.
  • • EPR pairs used in quantum teleportation protocols.

Visual

Two connected particles with correlated spin states, shown as linked arrows pointing in the same or opposite directions.

Related Concepts

Bell State
EPR Paradox
Quantum Teleportation
Non-locality

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