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，人们对光线相互作用和基本量子逻辑操作进行了令人印象深刻的示范。这些耦合的轻型系统构成了出色的量子信息存储设备的基础，并将发射器的旋转状态变量（“固定量子”）映射到光场和从光场（“飞行Qubit”）。我们建议将纳米光学电路与单个原子（目标1）整合，并操纵强烈耦合的偶极极性子（目标2），以实现量子网络和自下而上的量子模拟器。提议的程序的方法是利用由光子带镜头材料设定的外来拓扑以及超速rydberg原子之间的远距离偶极耦合，利用单个照片与原子之间的强烈相互作用，从而导致在古典领域中不存在的能力。 总体而言，我们的视野是将潜水员的纳米光子结构与冷原子整合在一起，并利用Rydberg原子之间的强大原子间相互作用。 Advanced nanofabrication capabilities provide 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 other 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.与光学照片一致，量子类型（a）将用作基本量子逻辑单元，而量子类型（b）将提供量子内存。原子和光子兴奋之间的转化将通过将单个原子的强辐射耦合到光子晶体中以及通过原子集合的集体增强发射来实现，并通过将单张照片的量子状态运输量子状态启用的固定量之间的量子接线。 该提案的预期结果包括以下内容： （1）通过在集成光网络上的照片连接在一起的单个中性原子的功能量子回路实现。 （2）一种新的范式，用于通过光子晶体波导的真空波动量身定制的原子原子（光子 - 光子）相互作用。 （3）用超速rydberg晶格气体的量子库工程。 （4）使用Rydberg Polaritons实施光量子门和功能量子记忆。 这些实验将由本科，研究生和博士后研究人员进行。该申请要求提供与出版物相关的薪水，设备，旅行和费用的资金。加拿大将通过培训这些人并启用量子信息科学的新技术和科学前沿而直接受益。