Single photon sources for fiber optical quantum key distribution

用于光纤量子密钥分配的单光子源

• 批准号: 490905-2015
• 负责人: Majedi, AmirHamed
• 金额: $ 1.76万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 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=586660
• 关键词: Single; photon; sources; fiber; optical

Security plays a crucial role in everyday's communication systems with billions of users accessing the Internet from their devices. Online banking, e-commerce, e-health and online shopping are few examples in which unconditional security is of central importance to customers.The security of current communication systems, however, relies on mathematical and computational power that can be compromised by eavesdroppers and hackers. Current security protocols are also vulnerable to disruptive technologies such as quantum computing so there is a real need for an alternative approaches. Quantum Key Distributions (QKD) offers an ultimate solution that its unconditional security is based on the laws of quantum physics rather than mathematical power. There is a rapidly-growing technology to exploit quantum states of light, photons, in an existing optical fiber backbone to provide the security at the physical layers. Few successful companies provide optical fiber QKD solutions, however they are still suffering from imperfections in generation, detection and transmission of photons efficiently to take full advantage of quantum properties of light. Single photon sources and detectors are playing central role in all of the QKD systems and schemes and they are the most vulnerable components in the practical QKD systems. In this proposal, Majedi's group at the University of Waterloo teams up with RANOVUS to identify various single photon sources for QKD systems in terms of their performances, cost, and commercialization potentials. Majedi's group has a well-known expertise in single photon detectors and sources with a well-established experimental infrastructure at Waterloo fully capable of conducting such a research task. RANOVUS is a leading Canadian company with a portfolio in offering quantum dot multi-wavelength laser combined with advanced digital and photonics integrated circuit technologies for secure and high-speed communication networks.

安全在日常通信系统中扮演着至关重要的角色，数十亿用户通过他们的设备访问互联网。在网上银行、电子商务、电子健康和网上购物中，无条件安全对客户至关重要的例子寥寥无几。然而，当前通信系统的安全依赖于数学和计算能力，这些能力可能会被窃听者和黑客攻破。目前的安全协议也容易受到量子计算等颠覆性技术的影响，因此确实需要一种替代方法。 量子密钥分配(QKD)提供了一个终极解决方案，即它的无条件安全性是基于量子物理定律而不是数学幂。有一种快速发展的技术，可以利用现有光纤主干中的光的量子状态光子来提供物理层的安全性。很少有成功的公司提供光纤量子密钥分发解决方案，但它们在有效地产生、检测和传输光子以充分利用光的量子特性方面仍然存在缺陷。单光子源和探测器在所有量子密钥分发系统和方案中都扮演着核心角色，它们是实际量子密钥分发系统中最脆弱的组件。 在这项提案中，滑铁卢大学的Majedi的团队与Ranovus合作，从性能、成本和商业潜力的角度为量子密钥分配系统确定各种单光子源。马吉迪的团队在单光子探测器和光源方面拥有知名的专业知识，在滑铁卢拥有完善的实验基础设施，完全有能力进行这样的研究任务。Ranovus是一家领先的加拿大公司，其业务组合是为安全和高速通信网络提供结合先进数字和光子集成电路技术的量子点多波长激光器。