A comparative study of universal quantum computing models: Toward a physical unification. Issue 4 (2nd December 2021)

• Record Type: Journal Article
• Authors: Wang, Dong‐Sheng
• Is Part Of: Quantum engineering. Volume 3:Issue 4(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-12-02
• Subjects: quantum computing models -- quantum error correction codes | quantum algorithms; Quantum theory -- Periodicals; Engineering -- Periodicals; Quantum theory; Engineering; Electronic journals; Periodicals; 530.12
• DOI: 10.1002/que2.85
• Languages: English
• ISSNs: 2577-0470

Abstract

Abstract: Quantum computing has been a fascinating research field in quantum physics. Recent progresses motivate us to study in depth the universal quantum computing models (UQCMs), which lie at the foundation of quantum computing and have tight connections with fundamental physics. Although being developed decades ago, a physically concise principle or picture to formalize and understand UQCM is still lacking. This is challenging given the diversity of still‐emerging models, but important to understand the difference between classical and quantum computing. In this work, we carried out a primary attempt to unify UQCM by classifying a few of them as two categories, hence making a table of models. With such a table, some known models or schemes appear as hybridization or combination of models, and more importantly, it leads to new schemes that have not been explored yet. Our study of UQCM also leads to some insights into quantum algorithms. This work reveals the importance and feasibility of systematic study of computing models.