Fast Generation of Time-Stationary Spin-1 Squeezed States by Nonadiabatic Control

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.

Automated summary

This paper proposes a new method for creating time-stationary squeezed states in a spin-1 Bose condensate. The method involves a pair of controlled quenches of an external magnetic field, allowing for tuning of the system Hamiltonian near a phase transition. The quantum fluctuations of the system are accurately described by quantum harmonic oscillator dynamics in the limit of a large system size, and the method can be applied to spin-1 gases prepared in low-energy or high-energy polar states.