Quantum entanglement is a phenomenon in quantum mechanics where particles become interconnected, such that the state of one particle instantly influences the state of another, no matter the distance between them. This "spooky action at a distance," as Einstein called it, challenges classical notions of locality and realism.
Core Concepts 🔬
- Entangled Particles: When two or more particles interact, they can form entangled states. For example, a pair of photons may be entangled in polarization.
- Superposition: Entangled particles exist in a superposition of states until measured. This is often visualized as a correlated wavefunction.
- Non-Locality: Changes to one entangled particle affect the other instantaneously, even if separated by vast distances.
Applications 🌐
- Quantum Communication: Enables secure data transmission through quantum key distribution (QKD).
- Quantum Computing: Entangled qubits allow parallel processing and complex calculations.
- Quantum Cryptography: Utilizes entanglement for unbreakable encryption protocols.
Explore more about quantum computing's role in entanglement: /en/services/library/quantum/quantum_computing