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，预测并观察到被囚禁原子的振动能量的快速去除。在远离Lamb-Dicke极限的条件下数值处理这个问题，人们观察到三个内部电子自由度和被困原子的外部平移自由度之间的纠缠的强烈签名。这样，原子就被驱动到一个纠缠的非平衡定态，这个定态是由耗散动力学引起的，并且与边带跃迁的强度成比例。该项目的中心目标是详细数值研究电子quutrit和激光驱动的被困原子的平移自由度之间的量子关联的时间演化，特别侧重于冷却过程中纠缠的生、死和再生的动力学，以及由此产生的非平衡定态的纠缠特性，以及明确确定实验上可访问的纠缠证人和措施。令人兴奋的前景，能够数值模拟这个实验现实系统的全耦合量子演化形成了这个建议的骨干。