2019/07/31 by Giacomo Pantaleoni, Ben Q. Baragiola, Nicolas C. Menicucci · 1 citation
Computer Science · Engineering · Physics and Astronomy · #Computer science #Modular design #Physics #Programming language #Quantum Computing Algorithms and Architecture #Quantum-Dot Cellular Automata #Radio Frequency Integrated Circuit Design #quant-ph
paper · pdf · doi:10.1103/physrevlett.125.040501
published as Phys. Rev. Lett. 125, 040501 (2020) · Changed title; other minor revisions
arxiv created 2020/07/20 · openalex publication_date 2020/07/24 · arxiv updated 2020/07/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We introduce a framework to decompose a bosonic mode into two virtual subsystems-a logical qubit and a gauge mode. This framework allows the entire toolkit of qubit-based quantum information to be applied in the continuous-variable setting. We give a detailed example based on a modular decomposition of the position basis and apply it in two situations. First, we decompose Gottesman-Kitaev-Preskill grid states and find that the encoded logical state can be damaged due to entanglement with the gauge mode. Second, we identify and disentangle qubit cluster states hidden inside of Gaussian continuous-variable cluster states.