Dissipative Quantum Chaos Perspective on Near-Term Quantum Computing

由D-Wave Systems、霍尼韦尔（Honeywell）、谷歌和IBM等公司开发的量子计算机（QC）原型机的到来标志着量子信息技术时代的开始。然而，在近十年之后，可用的平台仍然是原型。这样做的原因源于物理学：在保持必要程度的控制的同时，将量子处理器与环境隔离是极其困难的。与其继续与环境引起的退相干作斗争，我们希望改变范式，开发一种将耗散作为资源的方法。我们将通过从耗散量子混沌的角度重新审视量子处理器、量子算法和量子纠错方案来实现这一点。我们项目的主要目标是基于开放量子系统物理学的最新思想，发展耗散量子电路理论。该理论将为当前噪声中等规模量子技术时代的量子比特电路分析和设计提供一种新的方法。在实现这一目标的过程中，我们将开发一种在现有QC原型上模拟开放量子系统的方法。这将构成开放量子多体系统实验研究的新方法，并突出当前的量子计算机作为已经建立的灵活平台来探索，模拟和模拟复杂系统和现象。

The arrival of Quantum Computer (QC) prototypes developed by companies like D-Wave Systems, Honeywell, Google, and IBM, marked the beginning of the era of Quantum Information Technology. Yet, after almost a decade, the available platforms remain prototypical. The reason for this is rooted in physics: It is extremely difficult to isolate quantum processors from their environment while keeping the necessary degree of control. Rather than contributing to the ongoing fight with environment-induced decoherence, we want to shift the paradigm and develop an approach that uses dissipation as a resource. We will accomplish this by re-viewing quantum processors, quantum algorithms, and quantum error correction schemes from the perspective of Dissipative Quantum Chaos. The primary objective of our project is to develop a theory of dissipative quantum circuits, based on recent ideas on the physics of open quantum systems. The theory will provide a new approach to analysis and design of qubit-based circuits in the current era of Noisy Intermediate-Scale Quantum Technologies. On the way to this goal, we will develop a methodology of simulations of open quantum systems on the existing QC prototypes. This will constitute a new approach to experimental studies of open quantum many-body systems and highlight the present-day QCs as already established flexible platforms to explore, simulate, and model complex systems and phenomena.