Topologically Protected Quantum Logic Gates with Valley-Hall Photonic Crystals

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 24 vom: 13. Juni, Seite e2311611
1. Verfasser:	He, Lu (VerfasserIn)
Weitere Verfasser:	Liu, Dongning, Zhang, Huizhen, Zhang, Furong, Zhang, Weixuan, Feng, Xue, Huang, Yidong, Cui, Kaiyu, Liu, Fang, Zhang, Wei, Zhang, Xiangdong
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2024
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article quantum circuit quantum gate topological protection valley photonic crystals

Beschreibung
Zusammenfassung:	© 2024 Wiley‐VCH GmbH. Topological photonics provide a promising way to realize more robust optical devices against some defects and environmental perturbations. Quantum logic gates are fundamental units of quantum computers, which are widely used in future quantum information processing. Thus, constructing robust universal quantum logic gates is an important way forward to practical quantum computing. However, the most important problem to be solved is how to construct the quantum-logic-gate-required 2 × 2 beam splitter with topological protection. Here, the experimental realization of the topologically protected contradirectional coupler is reported, which can be employed to realize the quantum logic gates, including control-NOT and Hadamard gates, on the silicon photonic platform. These quantum gates not only have high experimental fidelities but also exhibit a certain degree of tolerances against certain types of defects. This work paves the way for the development of practical optical quantum computations and signal processing
Beschreibung:	Date Revised 13.06.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202311611