论文标题
耗散工程的非独立门操作
Nonunitary Gate Operations by Dissipation Engineering
论文作者
论文摘要
不可逆转的逻辑与统一的量子演化不一致。通过经典测量模拟此类操作可能会导致干扰和高度资源的需求。为了克服这些局限性，我们提出的协议是利用耗散实现不可逆转的门操作所需的非单身进化。利用受到衰减的其他激发状态，我们设计了在最小稳定的希尔伯特空间上执行所需的门操作的有效衰减过程。这些以确定性和自主的方式运行，而无需测量。考虑到几种经典逻辑操作，例如OR，NOR和XOR GATES，我们体现了我们的方法。为了实现实验，我们讨论了量子点中可能的实现。我们的研究表明，不可逆转的逻辑操作可以在逼真的量子系统上有效地执行，并且耗散工程是获得非自然发展的重要工具。拟议的操作扩展了量子工程师的工具箱，并在NISQ算法和量子机学习中具有有希望的应用。
Irreversible logic is at odds with unitary quantum evolution. Emulating such operations by classical measurements can result in disturbances and high resource demands. To overcome these limitations, we propose protocols that harness dissipation to realize the nonunitary evolution required for irreversible gate operations. Using additional excited states subject to decay, we engineer effective decay processes that perform the desired gate operations on the smallest stable Hilbert space. These operate deterministically and in an autonomous fashion, without the need for measurements. We exemplify our approach considering several classical logic operations, such as the OR, NOR, and XOR gates. Towards experimental realization, we discuss a possible implementation in quantum dots. Our study shows that irreversible logic operations can be efficiently performed on realistic quantum systems and that dissipation engineering is an essential tool for obtaining nonunitary evolutions. The proposed operations expand the quantum engineers' toolbox and have promising applications in NISQ algorithms and quantum machine learning.
