Quantum entanglement is a fundamental and intriguing phenomenon in quantum physics that describes a special connection between two or more particles, such as electrons or photons, where the quantum state of one particle becomes instantaneously correlated with the state of another, regardless of the distance separating them. This phenomenon was famously described by Albert Einstein as "spooky action at a distance."
Key Aspects of Quantum Entanglement:
1. Correlation Beyond Classical Physics:
- In classical physics, two objects can be correlated, but the correlation is limited by information exchange at or below the speed of light. In contrast, entanglement enables instantaneous correlation between particles, even if they are light-years apart.
2. Non-Separable States:
- When two particles become entangled, their quantum states are described as a single, non-separable quantum state. This means that you cannot independently describe the state of each particle; they are intricately linked.
3. Bell's Theorem and Violation of Local Realism:
- Entanglement challenges the principle of local realism, which posits that physical processes occurring in one location cannot instantaneously affect pr....
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