Extreme quantum nonlinear optics with strongly coupled atoms and photons

具有强耦合原子和光子的极端量子非线性光学

• 批准号: RGPIN-2015-05920
• 负责人: Choi, KyungSoo
• 金额: $ 1.97万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=613824
• 关键词: Extreme; quantum; nonlinear; optics; strongly

In recent years, there have been impressive demonstrations of light-matter interactions and elementary quantum logic operations. These coupled light-matter systems form the basis for excellent quantum information storage devices, mapping spin state variable ("stationary qubit") of an emitter to and from optical fields ("flying qubit"). We propose to integrate nanoscopic optical circuits with single atoms (Objective 1) and to manipulate strongly coupled dipolar polaritons (Objective 2) for the realizations of quantum networks and bottom-up quantum simulators. The approach of the proposed program is to utilize the strong interactions between single photons and atoms with exotic topologies set by photonic bandgap materials and the long-range dipolar coupling between ultracold Rydberg atoms, leading to the capabilities that have not existed heretofore in the classical realm. Overall, our vision is to integrate diverse nanophotonic structures with cold atoms and to utilize the strong inter-atomic interactions between Rydberg atoms. Advanced nanofabrication capability provides the technical foundation of the proposed activities for Objective 1, while new trapping configuration for ultracold Rydberg atoms form the basis for the research activities for Objective 2. The full "quantum" functionality for otherwise linear circuits is achieved by atomic matter qubits, with the information encoded into (a) internal hyperfine spin states of single atoms and (b) collective states of atomic ensembles. In concert with optical photons, qubit type (a) will serve as elementary quantum logic units, while qubit type (b) will provide quantum memory. The inter-conversion between atomic and photonic excitation will be accomplished by the strong radiative coupling of single atoms into photonic crystals and by the collective enhanced emission with atomic ensembles, with the quantum wiring between stationary qubits enabled by transporting quantum states of single photons. The anticipated outcomes of the proposal include the following: (1) The realization of functional quantum circuits with single neutral atoms wired together by photons over integrated optical networks. (2) A new paradigm for emulating quantum magnetism with atom-atom (photon-photon) interactions tailored by vacuum fluctuations of photonic crystal waveguides. (3) Quantum-reservoir engineering with ultracold Rydberg lattice gases. (4) The implementation of optical quantum gates and functional quantum memories with Rydberg polaritons. These experiments will be carried out by undergraduate, graduate, and post-doctoral researchers. This application requests funding for their salary, equipment, travel, and costs associated with publications. Canada will directly benefit by training these individuals and by enabling new technological and scientific frontiers of quantum information science.

近年来，光-物质相互作用和基本量子逻辑运算的演示令人印象深刻，这些耦合的光-物质系统构成了出色的量子信息存储设备的基础，将发射器的自旋态变量（“静止量子位”）映射到。我们建议将纳米光学电路与单个原子紧密集成（目标 1）并操纵耦合偶极子（目标 2）以实现量子网络和自下而上。所提出的程序的方法是利用单光子和具有由光子带隙材料设置的奇异拓扑的原子之间的强相互作用以及超冷里德伯原子之间的长程偶极耦合，从而产生迄今为止不存在的能力。古典境界。 总体而言，我们的愿景是将不同的纳米光子结构与冷原子相结合，并利用先进的纳米加工能力为目标 1 的拟议活动提供技术基础，同时形成超冷里德伯原子的新捕获配置。目标 2 研究活动的基础。线性电路的完整“量子”功能是通过原子物质量子位实现的，信息编码为 (a) 单原子的内部超精细自旋态和(b) 原子系综的集体态。与光学光子相配合，量子位类型 (a) 将用作基本量子逻辑单元，而量子位类型 (b) 将提供量子存储。这是通过将单个原子强辐射耦合到光子晶体中以及通过原子系综的集体增强发射来实现的，通过传输单个光子的量子态来实现固定量子位之间的量子布线。 该提案的预期成果包括以下内容： (1) 通过集成光网络通过光子将单个中性原子连接在一起的功能量子电路的实现。 （2）通过光子晶体波导的真空涨落定制的原子-原子（光子-光子）相互作用模拟量子磁性的新范例。 (3) 超冷里德堡晶格气体的量子储层工程。 (4)利用里德伯极化子实现光学量子门和功能量子存储器。 这些实验将由本科生、研究生和博士后研究人员进行，该申请要求为他们的工资、设备、旅行和与出版物相关的费用提供资金，加拿大将通过培训这些人以及支持新技术和科学而直接受益。量子信息科学前沿。