Geometry of entangled states, Bloch spheres and Hopf fibrations

Abstract. We discuss a generalization to 2 qubits of the standard Bloch sphere representation for a single qubit, in the framework of Hopf fibrations of high dimensional spheres by lower dimensional spheres. The single qubit Hilbert space is the 3-dimensional sphere S 3. The S 2 base space of a suit... View More