2021/04/30 by Paula Cordero Encinar, Andrés Agustí, Carlos Sabín · 11 citations
Computer Science · Physics and Astronomy · #Beam splitter #Computer science #Fidelity #High fidelity #IBM #Laser #Mode (computer interface) #Optics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum mechanics #Quantum simulator #Quantum-Dot Cellular Automata #Qubit #Telecommunications #quant-ph
paper · pdf · doi:10.1103/physreva.104.052609
published in DIGITAL.CSIC (Spanish National Research Council (CSIC)) 104(5) (Consejo Superior de Investigaciones Científicas) · 14 pages, 17 figures. v3: published version
openalex publication_date 2021/11/18 · arxiv created 2021/12/20 · arxiv updated 2021/12/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/15
We present results on the digital quantum simulations of beam-splitter and squeezing interactions. The bosonic Hamiltonians are mapped to qubits and then digitalized in order to implement them in the IBM quantum devices. We use error mitigation and postselection to achieve high-fidelity digital quantum simulations of single-mode and two-mode interactions, as evinced---where possible---by full tomography of the resulting states. We achieve fidelities above 90% in the case of single-mode squeezing with low squeezing values and ranging from 60% to 90% for large squeezing and in the more complex two-mode interactions.