论文标题
热蒸气中的自旋交换碰撞创造并维持双方纠缠
Spin-exchange collisions in hot vapors create and sustain bipartite entanglement
论文作者
论文摘要
碱或碱/贵重气蒸气中的自旋交换碰撞是基于量子传感，核子结构研究，基本对称性的测试和医学成像的基础。我们在这里表明，热碱蒸气中的自旋交换碰撞自然会产生强大的二分纠缠，我们使用量子信息科学工具明确量化了这一点。这种纠缠至少与自旋交换松弛时间至少具有寿命，并直接影响可测量的自旋噪声可观察到。这是一个正式的理论上的证明，即热和密集的原子蒸气可以支持长期的两分和可能的高阶纠缠。
Spin-exchange collisions in alkali or alkali/noble gas vapors are at the basis of quantum sensing, nucleon structure studies, tests of fundamental symmetries, and medical imaging. We here show that spin-exchange collisions in hot alkali vapors naturally produce strong bipartite entanglement, which we explicitly quantify using the tools of quantum information science. This entanglement is shown to have a lifetime at least as long as the spin-exchange relaxation time, and to directly affect measurable spin noise observables. This is a formal theoretical demonstration that a hot and dense atomic vapor can support longlived bipartite and possibly higher-order entanglement.
