Spectroscopy of three strongly coupled flux qubits

Antti Niskanen; K. Harrabi; F. Yoshihara; Y. Nakamura; J.S. Tsai

doi:10.1103/PhysRevB.74.220503

Spectroscopy of three strongly coupled flux qubits

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

VTT Technical Research Centre of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

32 Citations (Scopus)

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 language	English
Article number	220503
Number of pages	4
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	74
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.74.220503
Publication status	Published - 2006
MoE publication type	A1 Journal article-refereed

Keywords

quantum computing
antiferromagnetism
SQUID
Josephson junction
qubits

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10.1103/PhysRevB.74.220503

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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.",

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AU - Harrabi, K.

AU - Yoshihara, F.

AU - Nakamura, Y.

AU - Tsai, J.S.

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KW - quantum computing

KW - antiferromagnetism

KW - SQUID

KW - Josephson junction

KW - qubits

U2 - 10.1103/PhysRevB.74.220503

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JO - Physical Review B: Condensed Matter and Materials Physics

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Spectroscopy of three strongly coupled flux qubits

Abstract

Keywords

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