Generalized Bloch spheres form-qubit states
Klaus Dietz · Journal of Physics A Mathematical and General · 2006
m -qubit states are embedded in Clifford algebras. Their probability spectrum then depends on O (2 m )- or O (2 m + 1)-invariants, respectively. Parameter domains for O (2 m (+1))-vector and -tensor configurations, generalizing the notion of a Bloch sphere, are derived.