Interaction between an Artificial Atom and an Electromagnetic Field～Beyond the Strong Coupling～

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Other Title
  • 超伝導人工原子と電磁場の相互作用～強結合のその先へ～
  • チョウデンドウ ジンコウ ゲンシ ト デンジバ ノ ソウゴ サヨウ : キョウ ケツゴウ ノ ソノサキ エ

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<p>We have observed extremely strong coupling between a superconducting flux qubit and a microwave LC resonator. The coupling energy is larger than the energies of the bare qubit and photons. The observed energy spectra are well described by the Rabi model, and they agree with selection rules that reflect the symmetry of the circuits. All our observations indicate the realization of an entangled ground state. Finally, the relation with the superradiant quantum phase transition is discussed.</p>

Journal

  • Butsuri

    Butsuri 73 (1), 21-26, 2018-01-05

    The Physical Society of Japan

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