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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=708160
• 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，这些耦合物质系统构成了出色的量子信息设备的基础，绘制旋转状态变量和光场（“飞行Qubit”）将光学回路与单个原子（物镜1）偶联的偶极极性子（物镜2），以实现量子网络和自下而上的量子模拟器。以及长期的Dipolar coupring Ultracold Rydberg原子，导致迄今为止不存在的能力。 总体而言，要整合多样化的纳米光谱，并利用Rydberg MS之间的强烈相互作用。高级纳米性为目标1提供了支撑活动，而Ultracold Rydberg Atoms的新捕获则构成了目标2的基础。将信息编码到（a）单个原子的内部超细自旋状态和（b）原子集合的集体状态。 b）将通过强烈的辐射耦合单个原子晶体通过运输单个光子的量子状态，可以通过强烈的辐射耦合来实现原子激发和光子激发之间的反向。 该提案的预期结果包括以下内容： （1）实现具有单个中性原子的功能量子电路，其光子在集成的光网络上。 （2）一种新的范式，用于通过真空晶体veguides真空波动量身定制的原子原子（光子 - 光子）相互作用。 （3）用Ultracold Rydberg晶格气体的量子库库工程。 （4）带有Rydberg Polaritons的实施量子门和功能量子记忆。 这些实验将由本科Y，设备，旅行和与出版物相关的成本进行。