Strong coupling of a quantum oscillator to a flux qubit at its symmetry point.

作者: A. Fedorov , A. K. Feofanov , P. Macha , P. Forn-Díaz , C. J. P. M. Harmans

DOI: 10.1103/PHYSREVLETT.105.060503

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摘要: A flux qubit biased at its symmetry point shows a minimum in the energy splitting (the gap), providing protection against noise. We have fabricated of which gap can be tuned fast and coupled this strongly to an LC oscillator. show full spectroscopy qubit-oscillator system generate vacuum Rabi oscillations. When is made equal oscillator frequency ?osc we find largest ?0.1?osc. Here being resonance coincides with optimal coherence point.

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