Geometry and Symmetric Coherent States of Three Qubits Systems

Abstract

In this paper, we first generalize the previous results that relate 1- and 2-qubit geometries to complex and quaternionic Mobius transformations respectively, to the case of 3-qubit states under octonionic Mobius transformations. This completes the correspondence between the qubit geometries and the four normed division algebras. Thereby, new systems of symmetric coherent states with 2 and 3 qubits can be constructed by mapping the spin coherent states to their antipodal symmetric ponits on the generalized Bloch spheres via Mobius transformations in corresponding dimensions. Finally, potential applications of the normed division algebras in physics are discussed.