Atom Optics with Cold Bosons

TL;DR

This paper explores the properties and phenomena of Bose-Einstein condensates of cold bosonic atoms, highlighting their coherence and similarities to optical systems, and discusses various observed effects and modes.

Contribution

It introduces the concept of generating and analyzing different condensate coherent modes and their associated effects, advancing understanding of atom optics with cold bosons.

Findings

Observation of interference patterns and currents

Demonstration of Rabi oscillations and harmonic generation

Identification of mode locking and atomic squeezing phenomena

Abstract

Trapped bosonic atoms can be cooled down to temperatures where the atomic cloud experiences Bose-Einstein condensation. Almost all atoms in a dilute gaseous system can be Bose-condensed, which implies that this system is in a coherent state. The coherent atomic system enjoys many properties typical of coherent optical systems. It is possible to generate different condensate coherent modes similarly to the generation of optical modes. Several effects can be observed, such as interference patterns, interference current, Rabi oscillations, harmonic generation, parametric conversion, Ramsey fringes, mode locking, dynamic transition between Rabi and Josephson regimes, and atomic squeezing.