论文标题
纠缠转移，积累和通过基于量子 - 步行的Qubit-Qudit动力学检索
Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics
论文作者
论文摘要
高维系统中量子相关性的产生和控制是量子技术当前景观的主要挑战。实现这种非古典高维资源将有可能解锁量子加密，通信和计算的增强功能。我们提出了一项协议，该协议能够通过基于量子 - 步行的{\ it Transfer \＆累计}机制获得$ d $维系统的纠缠状态，该机制涉及硬币和沃克自由度。调查量子步行的选择是由于它们在多种物理系统中的成功实施而得到的一般性和多功能性。因此，鉴于量子行走在量子信息中的跨剪切作用，我们的协议可能代表了一种多功能的一般工具，可以控制各种实验平台中的高维纠缠产生。特别是，我们说明了可能的光子实现，其中信息是在轨道角动量和单个光子自由度的极化程度中编码的。
The generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. Achieving such non-classical high-dimensional resources will potentially unlock enhanced capabilities for quantum cryptography, communication and computation. We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based {\it transfer \& accumulate} mechanism involving coin and walker degrees of freedom. The choice of investigating quantum walks is motivated by their generality and versatility, complemented by their successful implementation in several physical systems. Hence, given the cross-cutting role of quantum walks across quantum information, our protocol potentially represents a versatile general tool to control high-dimensional entanglement generation in various experimental platforms. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
