Electromagnetically-induced transparency and entanglement dynamics of a strongly driven trapped atom

强驱动捕获原子的电磁诱导透明度和纠缠动力学

• 批准号: 168164125
• 负责人: Professor Dr. Hanspeter Helm
• 金额: --
• 依托单位: Physikalisches Institut
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/168164125?language=en
• 关键词: Electromagnetically; induced; transparency; entanglement; dynamics

When two laser beams are tuned to electromagnetically-induced transparency, a rapid removal of vibrational energy of a trapped atom is predicted and observed under suitable experimental conditions. Treating this problem numerically under conditions far from the Lamb-Dicke limit, one observes strong signatures of entanglement between the three internal electronic degrees of freedom and the external translational degree of freedom of the trapped atom. The atom is thus driven into an entangled non-equilibrium stationary state which arises from the dissipative dynamics and which scales with the magnitude of the strength of sideband transitions. The central goal of the project is the detailed numerical investigation of the time-evolution of quantum correlations between the electronic qutrit and the translational degree of freedom of the laser-driven trapped atom, focusing in particular on the dynamics of birth, death and rebirth of entanglement during the cooling process, on the entanglement properties of the resulting non-equilibrium stationary state, and on the explicit determination of experimentally accessible entanglement witnesses and measures. The exciting prospect of being able to simulate numerically the full coupled quantum evolution of this experimentally realistic system forms the backbone for this proposal.

当两束激光被调谐到电磁感应透明时，在合适的实验条件下可以预测和观察到被捕获原子的振动能量的快速消除。在远离兰姆-迪克极限的条件下对这个问题进行数值处理，人们观察到被捕获原子的三个内部电子自由度和外部平移自由度之间存在强烈的纠缠特征。因此，原子被驱动进入纠缠的非平衡静止状态，该状态由耗散动力学产生，并且与边带跃迁的强度大小成比例。该项目的中心目标是对电子量子体与激光驱动捕获原子的平移自由度之间的量子相关性的时间演化进行详细的数值研究，特别关注冷却过程中纠缠的诞生、死亡和重生的动力学，由此产生的非平衡静止态的纠缠性质，以及实验上可访问的明确确定 纠缠证人和措施。能够对这个实验现实系统的全耦合量子演化进行数值模拟的令人兴奋的前景构成了该提案的支柱。