Spectroscopy of three strongly coupled flux qubits

Antti Niskanen (Corresponding Author), K. Harrabi, F. Yoshihara, Y. Nakamura, J.S. Tsai

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Abstract

We have carried out spectroscopic measurements of a system of three strongly coupled four-junction flux qubits. The samples studied cover a wide range of parameters with the coupling energy between neighboring qubits varying between
0.75 GHz and 6.05 GHz. The observed complicated spectra agree well with eight-level theory. The experiments are relevant for the realization of a tunable coupling between qubits.
Original languageEnglish
Article number220503
Number of pages4
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume74
Issue number22
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

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Keywords

  • quantum computing
  • antiferromagnetism
  • SQUID
  • Josephson junction
  • qubits

Cite this

Niskanen, A., Harrabi, K., Yoshihara, F., Nakamura, Y., & Tsai, J. S. (2006). Spectroscopy of three strongly coupled flux qubits. Physical Review B: Condensed Matter and Materials Physics, 74(22), [220503 ]. https://doi.org/10.1103/PhysRevB.74.220503