Back Cover: Generation and Structuring of Multipartite Entanglement in a Josephson Parametric System (Adv. Quantum Technol. 1/2023)
Kirill Viktorovich Petrovnin, Michael Romanovich Perelshtein, Tero Korkalainen, Visa Vesterinen, Ilari Lilja, Gheorghe Sorin Paraoanu, Pertti Juhani Hakonen · Advanced Quantum Technologies · 2023
Highly entangled multimode states in continuous variables are a valuable resource in quantum information. The cover illustrates the 4-partite correlations of microwave modes generated from electromagnetic vacuum via three-wave mixing process in a Josephson parametric amplifier by using three pumps. As shown in article number 2200031 by Kirill Viktorovich Petrovnin, Pertti Juhani Hakonen, and co-workers, this results in genuine multipartite entanglement. A fully controllable pump scheme can provide a comprehensive manipulation of the structure of the generated entangled states.