Storage of spin squeezing in a two-component Bose-Einstein condensate

TL;DR

This paper investigates how to effectively store spin squeezing in a two-component Bose-Einstein condensate by turning off external fields at optimal times, maintaining reduced spin fluctuations over extended periods.

Contribution

It introduces a method for preserving maximal spin squeezing in BECs by rapid external field turn-off, with analytical insights into the optimal timing.

Findings

Strong spin fluctuation reduction can be maintained long-term.

Analytical expressions for maximal-squeezing time are derived.

The physics underlying the storage method is clearly explained.

Abstract

Efficient control of spin squeezing in a two-component Bose-Einstein Condensate is studied by rapidly turning-off the external field at a time that maximal spin squeezing appears. We show that strong reduction of spin fluctuation can be maintained in a nearly fixed direction for a long time. We explain the underlying physics unambiguously, and present analytical expressions of the maximal-squeezing time.