N00N STATE AND ITS APPLICATIONS

Abstract

This Thesis is focussed on the preparation and applications of multiple quantum coherence such as MSSM(Many some, + Some many) States and N00N state(quantum mechanical many-body entangled state) in star topology molecules such as Trimethylphosphite(TMP) and Triisopropylphosphite,where j0100i+ j1011i, where j0i denotes spin up and j1i denotes spin down, is a particlular example of MSSM for four spin 1 2 system and the N00N State can be represented by j N00Ni = p1 2 (jN"; 0#i + j0";N#i (Nspins up; zero spin down + zero spin up;Nspins down), where N is the number of spins.The technique of preparing multiple quantum coherence is used to study slow diffusion of TMP in liquid crystal EBBA and the N00N state has been generated in both the molecules. Also, we demonstrate how spin polarisation transfer from one nucleus which has higher gyromagnetic ratio to other nucleus(with lower gyromagnetic ratio) using Insensitive Nuclear Enhancement by Polarisation Transfer(INEPT) can enhance the signal of the nucleus to which spin polarisations are transferred.