Integrated sources of multi-entangled/multi-dimensional quantum states

多纠缠/多维量子态集成源

• 批准号: RTI-2017-00817
• 负责人: Morandotti, Roberto
• 金额: $ 10.08万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 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=616773
• 关键词: Integrated; sources; multi; entangled; dimensional

The massive network integration of “intelligent” devices in the near-future, in addition to the consequent rapidly increasing demands on bandwidth, will require novel technologies that can enable this transition. The main requirement will be a high data rate computing and processing power to handle so-called “big data.” Since today’s technology will soon reach its limit with regard to power consumption and computing performances, thus failing to fulfill these demands, a new approach based on the laws of quantum mechanics emerges as a promising alternative. Quantum computation is predicted to outperform its classical counterpart in certain specific tasks, solving fundamentally important problems such as factorization and sorting. For realizing meaningful quantum computing, complex high-dimensional quantum states are required, but practical approaches with scalable, custom quantum state outputs have been experimentally inaccessible thus far - consequently slowing the realization of quantum technologies. Here we intend to build on our previous results, i.e. the demonstration of an on-chip optical light source generating two- and multi-photon qubit states (the quantum analogue to the classical bit), or, in other words, a frequency comb of qubits (Science 351, 1176 (2016). Based on these findings, our goal is the realization of high-dimensional quantum states in an integrated and compact form . Here we propose a new and disruptive scheme, in particular we plan to exploit hyper-entangled states built on the combination of time-bin and frequency-bin entanglement, focusing on the demonstration of the largest quantum state ever realized (also including bulk systems!). For this vision to become reality, a fundamental component (requested in the current application and not available elsewhere in Canada) is urgently needed, i.e. an ultra-fast optical modulator in combination with a high-frequency RF synthesizer as a driving unit. Such equipment will be used to introduce a deterministic frequency shift of the generated single photons, required to implement and design the frequency-bin entanglement. The benefits stemming from the proposed research program are two-fold. Not only will it pave the way for the development of new advanced quantum technologies, but it will also promote the training of highly-qualified personnel as needed by both Canadian industry and society.

在不久的将来，“智能”设备的大规模网络集成，以及随之而来的对带宽的快速增长的需求，将需要能够实现这一转变的新技术。主要要求是高数据速率计算和处理能力，以处理所谓的“大数据”。由于今天的技术在功耗和计算性能方面很快就会达到极限，因此无法满足这些需求，基于量子力学定律的新方法成为一种有前途的替代方案。量子计算预计将在某些特定任务中超越经典计算，解决基本的重要问题，如因子分解和排序。为了实现有意义的量子计算，需要复杂的高维量子态，但到目前为止，具有可扩展的自定义量子态输出的实用方法在实验上是无法实现的-因此减缓了量子技术的实现。在这里，我们打算建立在我们以前的结果基础上，即演示片上光学光源产生双光子和多光子量子比特态（经典比特的量子模拟），或者换句话说，量子比特的频率梳（Science 351，1176（2016））。基于这些发现，我们的目标是实现一个完整的和紧凑的形式的高维量子态。在这里，我们提出了一个新的和破坏性的方案，特别是我们计划利用超纠缠态建立在时间仓和频率仓纠缠的组合，专注于演示有史以来最大的量子态（也包括体系统！）。为了实现这一愿景，迫切需要一个基本组件（在当前申请中要求，在加拿大其他地方不可用），即与高频RF合成器结合作为驱动单元的超快光调制器。这种设备将用于引入所产生的单光子的确定性频移，这是实现和设计频箱纠缠所需的。所提出的研究计划产生的好处是双重的。它不仅将为新的先进量子技术的发展铺平道路，而且还将促进加拿大工业和社会所需的高素质人才的培训。