Bell state

English

Etymology

Named after Template:W (1928–1990), Irish physicist.

Noun

1. Template:Lb One of a set of four entangled states, namely $|{\mathrm{\Phi }}^{+}⟩=\frac{1}{\sqrt{2}}(|00⟩+|11⟩)$, $|{\mathrm{\Phi }}^{-}⟩=\frac{1}{\sqrt{2}}(|00⟩-|11⟩)$,    $|{\mathrm{\Psi }}^{+}⟩=\frac{1}{\sqrt{2}}(|01⟩+|10⟩)$, and $|{\mathrm{\Psi }}^{-}⟩=\frac{1}{\sqrt{2}}(|01⟩-|10⟩)$, where $|xy⟩:=|x⟩\otimes |y⟩$; these are the simplest examples of entangled states.

Anagrams

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