论文标题
通过工程耦合到环境来改善量子退火
Improving quantum annealing by engineering the coupling to the environment
论文作者
论文摘要
可以将大量优化问题映射到Ising模型，其中所有细节均在旋转的耦合中编码。然后，原始数学优化的任务等同于找到相应的自旋系统的基态，该系统可以通过依赖于绝热定理来实现的量子退火来实现。可以使用随机方法以及与外部环境耦合来缓解或解决此过程的一些固有缺点。我们表明，在单个自旋水平上仔细的系统浴耦合可以进一步改善退火。
A large class of optimisation problems can be mapped to the Ising model where all details are encoded in the coupling of spins. The task of the original mathematical optimisation is then equivalent to finding the ground state of the corresponding spin system which can be achieved via quantum annealing relying on the adiabatic theorem. Some of the inherent disadvantages of this procedure can be alleviated or resolved using a stochastic approach, and by coupling to the external environment. We show that careful engineering of the system-bath coupling at an individual spin level can further improve annealing.
