Quantum many body interactions in a two dimensional solid state system

二维固态系统中的量子多体相互作用

• 批准号: 410866565
• 负责人: Privatdozent Dr. Boris Naydenov
• 金额: --
• 依托单位: Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (HZB)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/410866565?language=en
• 关键词: Quantum; many; body; interactions; two

Quantum-Many-Body interactions still remain one of the main challenges in modern physics. They are related to various phenomena, like quantum phase transitions, spin frustration and become important for the emerging quantum technology. In this work we plan to study quantum many-body interactions in a two dimensional network of several hundred coupled nuclear spins. The latter will be coherently controlled using radio frequency pulses and their spin states will be polarised and read out using a nearby single optically active colour centre in diamond. We will perform nuclear magnetic resonance spectroscopy of the nuclear ensemble and study its relaxation and coherence properties. Afterwards multiple quantum coherence and entanglement states will be created and their time evolution observed. Furthermore, quantum magnetic phase transitions will be simulated with this physical system, by implementing various interaction Hamiltonians. Finally spin polarisation will be injected in one part of the network of nuclear spins and its propagation monitored using a second colour centre located few tens of nanometres away.

量子多体相互作用仍然是现代物理学的主要挑战之一。它们与各种现象有关，例如量子相变、自旋挫败，并且对于新兴的量子技术变得重要。在这项工作中，我们计划研究由数百个耦合核自旋组成的二维网络中的量子多体相互作用。后者将使用射频脉冲进行相干控制，并且它们的自旋状态将被偏振并使用钻石中附近的单个光学活性色心读出。我们将对核系综进行核磁共振波谱分析，并研究其弛豫和相干特性。之后，将创建多个量子相干和纠缠态，并观察它们的时间演化。此外，通过实施各种相互作用哈密顿量，将用该物理系统模拟量子磁相变。最后，自旋极化将被注入核自旋网络的一部分，并使用位于几十纳米外的第二色心来监测其传播。