论文标题
量子退火：概述
Quantum Annealing: An Overview
论文作者
论文摘要
在这篇综述中，在提供了量子退火背后的基本物理概念（或绝热量子计算）之后，我们概述了一些最近的理论和实验发展，指出了仍在辩论的问题。通过简要讨论了连续和不连续的量子相变的基本思想，我们讨论了在跨量子临界点上量子许多身体系统逐渐升起后，缺陷生成的kibble-zurek缩放缩放。在此过程中，我们讨论了相关的模型，包括纯和混乱，并阐明了量子退火协议的实施以及一些最新应用。此外，我们讨论了环境耦合对量子退火的影响。详细阐述了封闭系统中加快退火协议的一些可能方法：我们特别关注食谱，以避免在某些模型中发生不连续的量子相变，这些模型在能量差距随着系统大小呈指数化消失的模型中。
In this review, after providing the basic physical concept behind quantum annealing (or adiabatic quantum computation), we present an overview of some recent theoretical as well as experimental developments pointing to the issues which are still debated. With a brief discussion on the fundamental ideas of continuous and discontinuous quantum phase transitions, we discuss the Kibble-Zurek scaling of defect generation following a ramping of a quantum many body system across a quantum critical point. In the process, we discuss associated models, both pure and disordered, and shed light on implementations and some recent applications of the quantum annealing protocols. Furthermore, we discuss the effect of environmental coupling on quantum annealing. Some possible ways to speed up the annealing protocol in closed systems are elaborated upon: We especially focus on the recipes to avoid discontinuous quantum phase transitions occurring in some models where energy gaps vanish exponentially with the system size.
