Vacuum Rabi oscillations in a macroscopic superconducting qubit LC oscillator system

We have observed the coherent exchange of a single energy quantum between a flux qubit and a superconducting LC circuit acting as a quantum harmonic oscillator. The exchange of an energy quantum is known as the vacuum Rabi oscillations: the qubit is oscillating between the excited state and the grou...

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Published inarXiv.org
Main Authors Johansson, J, Saito, S, Meno, T, Nakano, H, Ueda, M, Semba, K, Takayanagi, H
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 18.10.2005
Subjects
Circuits
Exchanging
Harmonic oscillators
LC circuits
Oscillations
Oscillators
Quantum theory
Qubits (quantum computing)
Superconductivity
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Summary:We have observed the coherent exchange of a single energy quantum between a flux qubit and a superconducting LC circuit acting as a quantum harmonic oscillator. The exchange of an energy quantum is known as the vacuum Rabi oscillations: the qubit is oscillating between the excited state and the ground state and the oscillator between the vacuum state and the first excited state. We have also obtained evidence of level quantization of the LC circuit by observing the change in the oscillation frequency when the LC circuit was not initially in the vacuum state.
ISSN:2331-8422
DOI:10.48550/arxiv.0510457