Continuous-Variable Square-Ladder Cluster States in a Microwave Frequency Comb

Author(s): Fabio Lingua, J. C. Rivera Hernández, Michele Cortinovis, and David B. Haviland We describe an experiment demonstrating the generation of three independent square-ladder continuous-variable cluster states with up to 94 qumodes of a microwave frequency comb. This entanglement structure at a large scale is realized by injecting vacuum fluctuations into a Josephson Parametric Ampl… [Phys. Rev. Lett. 134, 183602] Published Fri May 09, 2025