Squeezing and Antibunching in Three-mode Atom-Molecule Bose-Einstein Condensates

Abstract

We report the presence of the non-classical properties namely squeezing and anti-bunching in three mode Bose-Einstein Condensate (BEC) system where the atomic mode is coupled with two molecular modes. Here photo associative stimulated Raman adiabatic passage (STIRAP) prepares the molecular modes in conjugation with Bose stimulation. Both squeezing and anti-bunching are found for atomic mode whereas the molecular modes remain coherent. The coupled mode squeezing is observed if one of the mode is necessarily atomic and the coupled mode anti-bunching is present only for atomic-excited molecular mode. No non-classicalities are found in excited molecular-stable molecular mode. The model Hamiltonian is solved analytically by a well-established approximation technique and the solutions are plotted with rescaled time. These solutions are well supported by numerical simulations. The criteria used here to examine non-classicalities are practically realizable