论文标题

通过纠缠分布增强量子退火

Enhancing Quantum Annealing via entanglement distribution

论文作者

Santos, Raúl, Buffoni, Lorenzo, Omar, Yasser

论文摘要

量子退火已被证明是解决几个优化问题的强大工具。但是,其性能受到基础量子硬件的有限连通性的严重影响,从而损害了量子加速。在这项工作中,我们通过描述一种通过本地操作和古典沟通(LOCC)来实施非本地耦合的方法,提出了一种解决这些问题的新方法来解决这些问题。非本地耦合非常通用,可利用分布式量子网络的可配置性,进而可以极大地提高基础硬件的物理连接性。此外,不同量子退火处理器之间非本地耦合的实现激活了分布式系统的可扩展性潜力,即允许分布式量子退火系统。最后,在更遥远的视野中,我们还表明,安全的多方量子退火算法是可能的,可以通过优化量子退火和特定类型的非本地耦合来合作不信任当事方。

Quantum Annealing has proven to be a powerful tool to tackle several optimization problems. However, its performance is severely impacted by the limited connectivity of the underlying quantum hardware, compromising the quantum speedup. In this work, we present a novel approach to address these issues, by describing a method to implement non-local couplings throught the lens of Local Operations and Classical Communcations (LOCC). Non-local couplings are very versatile, harnessing the configurability of distributed quantum networks, which in turn lead to great enhancement of the physical connectivity of the underlying hardware. Furthermore, the realization of non-local couplings between distinct quantum annealing processors activates the scalability potential of distributed systems, i.e. allowing for a distributed quantum annealing system. Finally, in a more distant vision, we also show that secure multi-party quantum annealing algorithms are possible, allowing for cooperation of distrusting parties through optimization with quantum annealing and a particular type of non-local couplings.

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