Local distinguishability of any three quantum states

  title={Local distinguishability of any three quantum states},
  author={Somshubhro Bandyopadhyay and Jonathan Walgate},
We prove that any three linearly independent pure quantum states can always be locally distinguished with nonzero probability regardless of their dimension, entanglement or multipartite structure. Almost always, all three states can be unambiguously identified. The only exceptional case, where one state is locally knowable but the other two are not, is… CONTINUE READING