Device-Independent Quantum Information Processing

与设备无关的量子信息处理代表了量子信息处理的一种新范式：目标是设计协议来解决相关的信息任务，而不依赖于协议中使用的设备的任何假设。例如，独立于设备的密钥分发协议旨在在两个诚实的用户之间建立一个密钥，其安全性与分发中使用的设备无关。与基于纠缠的标准量子信息协议相反，与设备无关的量子信息处理的主要资源是量子非局域性。除了概念上的兴趣之外，从实现的角度来看，设备独立协议提供了重要的优势：作为设备独立的，这些协议的实现虽然在技术上具有挑战性，但对于设备缺陷来说更健壮。当前和不久的将来的技术为实现与设备无关的协议提供了有希望的前景。这个项目探索了所有这些迷人的可能性。其主要目标是(i)从信息的角度获得非局部量子相关性的更好表征，（ii）改进现有的并衍生出该资源在与设备无关的量子信息处理中的新应用，以及（iii）设计与设备无关协议的可行实现。我们计划用跨学科的方法结合理论和实验物理、计算机科学和信息论的概念和工具来解决这些问题。

Device-Independent Quantum Information Processing represents a new paradigm for quantum information processing: the goal is to design protocols to solve relevant information tasks without relying on any assumption on the devices used in the protocol. For instance, protocols for device-independent key distribution aim at establishing a secret key between two honest users whose security is independent of the devices used in the distribution. Contrary to standard quantum information protocols, which are based on entanglement, the main resource for device-independent quantum information processing is quantum non-locality. Apart from the conceptual interest, device-independent protocols offer important advantages from an implementation point of view: being device-independent, the realizations of these protocols, though technologically challenging, are more robust against device imperfections. Current and near-future technology offer promising perspectives for the implementation of device-independent protocols.This project explores all these fascinating possibilities. Its main objectives are (i) obtaining a better characterization of non-local quantum correlations from an information perspective, (ii) improve existing and derive new application of this resource for device-independent quantum information processing and (iii) design feasible implementations of device-independent protocols. We plan to tackle these questions with an inter-disciplinary approach combining concepts and tools from Theoretical and Experimental Physics, Computer Science and Information Theory.