论文标题
在旋转1玻色酿凝结物中挤压基态
Squeezed Ground States in a Spin-1 Bose-Einstein Condensate
论文作者
论文摘要
我们在Atomic Spin-1 Bose-Einstein冷凝物中产生自旋挤压基态，该凝结物在相互作用pinsemble的极性和铁磁量子相之间的量子临界点附近调节。与通过量子相变淬灭原子挤压的典型的非平衡方法相反，挤压地面状态是时间稳定的andRemain在冷凝水的寿命中挤压。挤压的基态具有高达6-8 dB的计量性分析，并且在2 s上保持了恒定的挤压角。
We generate spin squeezed ground states in an atomic spin-1 Bose-Einstein condensate tuned nearthe quantum critical point between the polar and ferromagnetic quantum phases of the interactingspin ensemble. In contrast to typical non-equilibrium methods for preparing atomic squeezed statesby quenching through a quantum phase transition, squeezed ground states are time-stationary andremain squeezed for the lifetime of the condensate. A squeezed ground state with a metrologicalimprovement up to 6-8 dB and a constant squeezing angle maintained over 2 s is demonstrated.
