Generation and Structuring of Multipartite Entanglement in a Josephson Parametric System

• DOI: 10.1002/qute.202200031
• Publication Date: 2022-10-18T01:36:10Z
• Authors: Kirill Viktorovic...; Michael Romanovic...; Tero Korkalainen; Visa Vesterinen; Ilari Lilja; Gheorghe Sorin Pa...; Pertti Juhani Hak...
• Keywords: Multipartite; Multipartite entanglement

Abstract Quantum correlations are a vital resource in advanced information processing based on quantum phenomena. Remarkably, the vacuum state of field may act as key element for generation multipartite entanglement. In this work, genuine tripartite entangled and its control is achieved by use phase difference between two continuous pump tones. Control subspaces covariance matrix bisqueezed demonstrated. Furthermore, optimizing relationships three‐tone pumping scheme quadripartite entanglement generalized H‐graph (‐graph) explored. This provides comprehensive toolbox structure allows to demonstrate, first time authors' knowledge, microwave modes. All experimental results verified with numerical simulations nonlinear Langevin equation. It envisioned that resources facilitated multi‐pump configurations offer enhanced prospects data using parametric cavities.