n元量子信息的不可约化

Quantum-Assisted Graph Clustering and Quadratic Unconstrained D-ary Optimisation

Of late, we are witnessing spectacular developments in Quantum Information Processing with the availability of Noisy Intermediate-Scale Quantum devices of different architectures and various software development kits to work on quantum algorithms. Different problems, which are hard to solve by classical computation, but can be sped up (significantly in some cases) are also being populated. Leveraging these aspects, this paper examines unsupervised graph clustering by quantum algorithms or, more precisely, quantum-assisted algorithms. By carefully examining the two cluster Max-Cut problem withi…

通过相关直方图调制实现可调谐多进制量子安全直接通信

Tunable M-Ary Quantum Secure Direct Communication via Correlation-Histogram Modulation

提出基于双向纠缠的量子安全直接通信协议，信息编码为可调参数值，从检测对窗口的联合结果直方图解码，介绍协议级设计参数优势及防非理想效应泄漏的框架。

离散信源量子信道经典容量的推导

Derivation of classical capacity of quantum channel for discrete information source

本文证明了$M$对称态的量子信道的经典容量是通过先验概率的均匀分布实现的。我们还研究了非对称的情况下，如一个三进制幅度移位键控信号集和一个16进制正交幅度调制信号集在相干态。

当经典关联认证纠缠恢复时

When Classical Correlations Certify Entanglement Recovery

本文通过引入比互补性更宽松的不可约性条件，建立了纠缠与态可区分性之间的定量联系，并应用于纠缠蒸馏、量子纠错及测量权衡，提出了统一框架。

由态划分定义的n进制量子信息

Quantum information in base n defined by state partitions

我们将“nit”定义为量子信息的基数n度量，其基于与n元可观测量的结果相关联的状态划分，并且对于n>2，其基本上不可约为二进制编码。讨论了纠缠多粒子态中该测度的性质。k个粒子指定k个尼特，使得具有n个可能结果的可观测量的k个相互交换的测量足以确定信息。

基于态划分的量子信息和上下文平移原理

Quantum information via state partitions and the context translation principle

对于多粒子系统，基n中的量子信息可以通过根据n元（联合）观测量的结果划分状态集来定义。因此，k个粒子可以携带k个尼特。针对单个结果的随机性，提出了一种语境翻译原则。量子随机性与测量界面的不可控自由度有关，从而转化了制备状态和测量状态之间的失配。