Fast generation of time-stationary spin-1 squeezed states by non-adiabatic control

TL;DR

This paper proposes a rapid method to generate time-stationary spin-1 squeezed states in Bose condensates using non-adiabatic magnetic field quenches near a phase transition, leveraging harmonic oscillator dynamics.

Contribution

It introduces a non-adiabatic quench protocol for creating spin-1 squeezed states efficiently in Bose condensates, applicable to various initial states.

Findings

The method enables fast generation of spin-squeezed states.

Quantum fluctuations are well described by harmonic oscillator models.

Applicable to both low and high energy polar states.

Abstract

A protocol for the creation of time-stationary squeezed states in a spin-1 Bose condensate is proposed. The method consists of a pair of controlled quenches of an external magnetic field, which allows tuning of the system Hamiltonian in the vicinity of a phase transition. The quantum fluctuations of the system are well described by quantum harmonic oscillator dynamics in the limit of large system size, and the method can be applied to a spin-1 gas prepared in the low or high energy polar states.