A Maxwell's demon in the generation of an intense and slow guided beam

TL;DR

This paper demonstrates a Maxwell's demon-inspired method to enhance the phase space density of an atom beam by using a moving mirror to slow packets before their overlap, improving beam quality.

Contribution

It introduces a novel approach employing a Maxwell's demon-like strategy to optimize atom beam generation through controlled packet slowing and overlapping.

Findings

Enhanced phase space density of atom beams achieved

Optimal gain demonstrated through packet slowing technique

Method exploits information about packet position and velocity

Abstract

We analyze quantitatively the generation of a continuous beam of atoms by the periodic injection of individual packets in a guide, followed by their overlapping. We show that slowing the packets using a moving mirror before their overlapping enables an optimal gain on the phase space density of the generated beam. This is interpreted as a Maxwell's demon type strategy as the experimentalist exploits the information on the position and velocity of the center of mass of each packet.