Pauli vectors

Noun

Pauli vector (plural Pauli vectors)

1. A vector whose components are Pauli matrices; e.g., ⃑σ=σ₁̂i+σ₂̂j+σ₃̂k.
   • The eigenvectors of the first Pauli matrix "encode" — as it were — the +X and −X directions. Likewise, the eigenvectors of the second Pauli matrix "encode" the +Y and −Y directions and those of the third Pauli matrix, the +Z and −Z directions. The dot product of the Pauli vector with any unit...