Matter-wave amplification and phase conjugation via stimulated dissociation of a molecular Bose-Einstein condensate

TL;DR

This paper proposes a method to amplify and generate phase-conjugate atomic Bose-Einstein condensates through stimulated dissociation of molecular BECs, enabling quantum correlations and squeezing effects.

Contribution

It introduces a novel scheme for matter-wave amplification and phase conjugation using molecular BEC dissociation, with potential experimental realizations.

Findings

Generation of counterpropagating atomic beams with amplification

Observation of strong quantum correlations and squeezing

Potential for experimental implementation via Raman or Feshbach techniques

Abstract

We propose a scheme for parametric amplification and phase conjugation of an atomic Bose-Einstein condensate (BEC) via stimulated dissociation of a BEC of molecular dimers consisting of bosonic atoms. This can potentially be realized via coherent Raman transitions or using a magnetic Feshbach resonance. We show that the interaction of a small incoming atomic BEC with a (stationary) molecular BEC can produce two counterpropagating atomic beams -- an amplified atomic BEC and its phase-conjugate or time-reversed replica. The two beams can possess strong quantum correlation in the relative particle number, with squeezed number-difference fluctuations.