TY - JOUR

T1 - Dynamical preparation of stripe states in spin-orbit-coupled gases

AU - Cabedo, J.

AU - Claramunt, J.

AU - Celi, A.

PY - 2021/9/30

Y1 - 2021/9/30

N2 - In spinor Bose-Einstein condensates, spin-changing collisions are a remarkable proxy to coherently realize macroscopic many-body quantum states. These processes have been, e.g., exploited to generate entanglement, to study dynamical quantum phase transitions, and proposed for realizing nematic phases in atomic condensates. In the same systems dressed by Raman beams, the coupling between spin and momentum induces a spin dependence in the scattering processes taking place in the gas. Here we show that, at weak couplings, such modulation of the collisions leads to an effective Hamiltonian which is equivalent to the one of an artificial spinor gas with spin-changing collisions that are tunable with the Raman intensity. By exploiting this dressed-basis description, we propose a robust protocol to coherently drive the spin-orbit-coupled condensate into the ferromagnetic stripe phase via crossing a quantum phase transition of the effective low-energy model in an excited state.

AB - In spinor Bose-Einstein condensates, spin-changing collisions are a remarkable proxy to coherently realize macroscopic many-body quantum states. These processes have been, e.g., exploited to generate entanglement, to study dynamical quantum phase transitions, and proposed for realizing nematic phases in atomic condensates. In the same systems dressed by Raman beams, the coupling between spin and momentum induces a spin dependence in the scattering processes taking place in the gas. Here we show that, at weak couplings, such modulation of the collisions leads to an effective Hamiltonian which is equivalent to the one of an artificial spinor gas with spin-changing collisions that are tunable with the Raman intensity. By exploiting this dressed-basis description, we propose a robust protocol to coherently drive the spin-orbit-coupled condensate into the ferromagnetic stripe phase via crossing a quantum phase transition of the effective low-energy model in an excited state.

KW - Excited states

KW - Ferromagnetic materials

KW - Ferromagnetism

KW - Phase transitions

KW - Quantum entanglement

KW - Statistical mechanics

KW - Atomic condensates

KW - Bose-Einstein condensates

KW - Many body

KW - Nematic phasis

KW - Quantum state

KW - Quantum-phase transition

KW - Scattering process

KW - Spin dependence

KW - Spin orbits

KW - Spinors

KW - Bose-Einstein condensation

U2 - 10.1103/PhysRevA.104.L031305

DO - 10.1103/PhysRevA.104.L031305

M3 - Letter

VL - 104

JO - Physical review a

JF - Physical review a

SN - 1050-2947

IS - 3

M1 - L031305

ER -