Quantum entanglement, often dubbed "spooky action at a distance" by Einstein, is a phenomenon in quantum mechanics where particles become interconnected, such that the state of one instantly influences the state of another, no matter the distance between them. This defies classical physics and forms the foundation of many cutting-edge technologies.

Key Concepts

  • Entangled States: Particles like electrons or photons share a single quantum state, even when separated.
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  • Non-Locality: Changes to one particle affect the other instantaneously, challenging the classical notion of locality.
  • Applications:
    • Quantum computing
    • Quantum cryptography
    • Quantum teleportation

Historical Context

  • 1935: Einstein, Podolsky, and Rosen (EPR) criticized quantum mechanics through the EPR paradox.
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  • 1964: John Bell proposed Bell's Theorem, mathematically proving the existence of entanglement.
  • 1980s–Present: Experiments confirm quantum entanglement, earning it a central role in modern physics.

Why It Matters 🔬

Entanglement enables secure communication and ultra-fast computing. Explore its role in quantum networks further:
Quantum Entanglement Applications

Fun Fact 🤯

Entangled particles can be in superposition until measured, creating correlations that transcend space and time.

For visual insights into quantum phenomena, check out:
Quantum Mechanics Fundamentals