bell state measurement

What Are the Bell States?

The Bell states are four specific maximally entangled quantum states of two qubits, represented as follows:
|Φ⁺⟩ = (|00⟩ + |11⟩)/√2
|Φ⁻⟩ = (|00⟩ - |11⟩)/√2
|Ψ⁺⟩ = (|01⟩ + |10⟩)/√2
|Ψ⁻⟩ = (|01⟩ - |10⟩)/√2
These states are pivotal in quantum mechanics due to their high degree of entanglement and are used in various quantum algorithms and protocols.

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