Tools for bringing Quantum Communication to Optical Networks

将量子通信引入光网络的工具

• 批准号: 341495-2012
• 负责人: Lutkenhaus, Norbert
• 金额: $ 3.06万
• 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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=572274
• 关键词: Tools; bringing; Quantum; Communication; Optical

Quantum Communication uses quantum mechanics to solve communication tasks. Some of these tasks cannot be achieved by classical communication. The prominent example for this is Quantum Key Distribution (QKD) which creates secret key at distant locations, thus allowing provable secret communication. Other tasks can be solved more efficiently the quantum way. There are interesting applications in the literature that could run on an ideal quantum communication network. However, it is not known how to run most of the applications on the limited quantum-enabled communication networks that are available to us in the short and medium term. Optical Communication networks readily support quantum mechanical features, for example by using laser pulses. However, abstract protocols are formulated using an idealized quantum network that sends the generalization of classical bits, the qubits, while the practical optical communication networks use laser pulses, which form a restricted set of quantum signals. We will enlarge the range of applications that can be run on a quantum-enabled optical communication network. We will reveal the fundamental problems that arise in this adaptation to optical networks. This involves on one hand to identify what quantum mechanical effects are at the heart of the quantum advantage in abstract protocols, and on the other hand to analyze whether this effects can be exploited using the quantum mechanical signal structure that is accessible in practical optical network implementations. Knowing both sides, we will then develop general tools to match them. Such customized and optimized mapping of quantum protocols to available physical systems accelerates the possibility of their practical implementation, and enables more efficient use of available resources. The same approach led point-to-point QKD to high-speed implementations that successfully abandoned the quest to directly mimic the abstract qubit protocol. Understanding the necessary and sufficient conditions for adapting abstract qubit-inspired communication protocols to optical networks is an important step in assessing their eventual commercial viability.

量子通信使用量子力学来解决通信任务。这些任务中的一些无法通过经典的交流来实现。此的突出例子是量子密钥分布（QKD），该分布在遥远的位置创建秘密钥匙，从而允许可证明的秘密通信。可以以量子方式更有效地解决其他任务。 文献中有有趣的应用程序可以在理想的量子通信网络上运行。但是，尚不清楚如何在短期和中期可用于我们可用的有限量子通信网络上运行大多数应用程序。 光学通信网络很容易支持量子机械特征，例如使用激光脉冲。但是，使用理想化的量子网络制定抽象协议，该量子网络发送经典位的概括，Qubits，而实用的光学通信网络使用激光脉冲，该脉冲构成了一组受限制的量子信号。我们将扩大可以在支持量子的光通信网络上运行的应用程序范围。 我们将揭示这种适应光网络​​的基本问题。 一方面，这涉及到抽象协议中量子优势的核心，另一方面是哪些量子机械效应，另一方面，用于分析是否可以使用在实用的光学网络实现中可访问的量子机械信号结构来利用这种效果。知道双方，我们将开发一般工具以匹配它们。 对可用物理系统的量子协议进行定制和优化的映射可以加速其实际实施的可能性，并可以更有效地利用可用资源。相同的方法将点对点QKD带到了高速实现，这些实现成功地放弃了直接模拟抽象量子协议的任务。 了解将抽象Qubit启发的通信协议适应光网络​​的必要条件是评估其最终商业可行性的重要步骤。