DQS - Quantum Simulation using cold atoms in optical lattices

我们的目标是设计光学晶格中超冷原子和分子的性质，从而使用这些精确控制的多体系统来模拟来自凝聚态物理(CMP)的重要的强关联系统。因此，光学晶格实验起到了模拟量子计算机的作用，并允许探索在化学机械抛光系统本身中无法访问的物理状态。最终的愿景是为强关联系统的直接量子模拟(DQS)开发一套完整的“工具箱”。目前人们对这种强大的跨学科方法解决基本量子多体问题的浓厚兴趣，部分是由于这个CRP成员所开展的工作。例如，Bloch教授在光学晶格中超流体到Mott绝缘体转变的第一次实验观察中发挥了主导作用，这是在这种系统中模拟CMP的一个典型例子。雅克博士(在因斯布鲁克与佐勒教授合作时)从理论上预测了这一点。这些想法最近在佛罗伦萨被扩展到光学晶格中的受控无序，以及玻色玻璃相的产生。这一CRP将刺激理论和实验之间的进一步工作和合作。福特博士将继续利用玻色子和费米子对无序进行开创性的工作，并包括与时间相关的研究。福特教授的团队(牛津大学)将创建一个旋转的光学晶格，以模拟磁场对类似凝聚态系统的应用，并测试雅克博士对高场分数量子霍尔效应的预测。Bloch教授的团队(Mainz)将在光学晶格中创建异核偶极分子，并利用它们强大的静电相互作用来计算自旋系统的DQS。牛津的Jaksch博士和Innsbruck的Daley博士的理论小组将使用最先进的技术来模拟实验系统，研究依赖时间的输运现象，以及通过控制噪声添加来制备专门的多体状态的方法。

Our aim is to engineer the properties of ultracold atoms, and molecules, in optical lattices and so use these precisely controlled many-body systems to model important strongly-correlated systems from Condensed Matter Physics (CMP). Optical-lattice experiments thus function as ‘analogue’ quantum computers, and allow exploration of physical regimes inaccessible in CMP systems themselves. The ultimate vision is to develop a complete ‘toolbox’ of methods for the direct quantum simulation (DQS) of strongly-correlated systems. The intense current interest in this powerful interdisciplinary approach to fundamental quantum many-body problems has been stimulated, in part, by work carried out by members of this CRP. For example, Professor Bloch played a leading role in the first experimental observation of the superfluid to Mott Insulator transition in an optical lattice, a prime example of modelling CMP in such systems. This was predicted theoretically by Dr Jaksch (while working with Professor Zoller in Innsbruck). These ideas were recently extended in Florence to controlled disorder in optical lattices, and production of a Bose glass phase.This CRP will stimulate further work and collaborations between theory and experiment. The ground-breaking work on disorder will be continued by Dr Fort, using both bosons and fermions, and including time-dependent studies. Professor Foot’s team (Oxford) will create a rotating optical lattice to simulate the application of a magnetic field to the analogous Condensed Matter system, and test predictions of Dr. Jaksch on the high-field Fractional Quantum Hall Effect. Professor Bloch’s group (Mainz) will create heteronuclear dipolar molecules in an optical lattice and exploit their strong electrostatic interactions for DQS of spin systems. The theory groups of Dr. Jaksch in Oxford and Dr. Daley in Innsbruck, will use state-of-the-art techniques to model the experimental systems, studying , e.g., time-dependent transport phenomena and methods for preparing specialised many-body states via controlled addition of noise.