Bell state

名词noun

1. 1quantum information scienceOne of a set of four entangled states, namely |Φ+⟩=12(|00⟩+|11⟩), |Φ−⟩=12(|00⟩−|11⟩), |Ψ+⟩=12(|01⟩+|10⟩), and |Ψ−⟩=12(|01⟩−|10⟩), where |xy⟩:=|x⟩⊗|y⟩; these are the simplest examples of entangled states.