Coherent state superpositions, entanglement, and gauge/gravity correspondence

We focus on two types of coherent states, the states multi-graviton and giant graviton in context gauge/gravity correspondence. conveniently use a phase shift operator its actions superpositions these states. find N-state Schrödinger cat which approach one-row Young tableau with fidelity between them asymptotically reaching 1 at large N. The quantum Fisher information is proportional to variance excitation energy underlying characterizes localizability angular direction space. analyze correlation entanglement gravitational degrees freedom using different regions space plane bubbling AdS. entangled rings related area annulus rings. also noisy can be viewed as interpolated that interpolate pure state noiseless limit maximally mixed noise limit.