209th RQC Seminar

  • 講演者

    Dr. 片山 春菜
    ( 広島大学大学院先進理工系科学研究課 )

  • 日程

    2025年8月18日(月), 13:00 - 14:00 (1:00 p.m. - 2:00 p.m.)

  • 開催場所

    ハイブリッド（ZOOM・ Room S507 at Wako Chem. and Mat. Phys. Bldg. / 物質棟5階 S507 (S51))

  • 講演タイトル

    Simulating Quantum Fluctuations during Inflation with Superconducting Circuits

  • お問合せ

    rqc_info[at]ml.riken.jp

講演概要
Quantum fluctuations generated during cosmic inflation are believed to seed the large-scale structure of the universe. This scenario is strongly supported by observations of the cosmic microwave background. However, no direct method has been established to experimentally verify the generation and time evolution of these quantum fluctuations. In this talk, we propose a novel analog approach using superconducting quantum circuits to simulate such phenomena in a controllable laboratory environment. The scalar field fluctuations during inflation can be modeled as quantum oscillators with time-dependent inverted harmonic potentials. These dynamics can be emulated by modulating the magnetic flux through superconducting quantum interference devices (SQUIDs). By analyzing the dynamics of Josephson phase differences in SQUID arrays, we reproduce key features of inflationary evolution. This platform opens new possibilities for experimentally probing quantum aspects of the early universe.

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