Four-qubit device with mixed couplings

M. Grajcar, A. Izmalkov, S. H W Van Der Ploeg, S. Linzen, T. Plecenik, Th Wagner, U. Hübner, E. Il'ichev, H. G. Meyer, A. Yu Smirnov, Peter J. Love, Alec Maassen Van Den Brink, M. H S Amin, S. Uchaikin, A. M. Zagoskin

Division for Electronic Engineering

Research output: Contribution to journal › Article

71 Citations (Scopus)

Abstract

We present the first experimental results on a device with more than two superconducting qubits. The circuit consists of four three-junction flux qubits, with simultaneous ferro- and antiferromagnetic coupling implemented using shared Josephson junctions. Its response, which is dominated by the ground state, is characterized using low-frequency impedance measurement with a superconducting tank circuit coupled to the qubits. The results are found to be in excellent agreement with the quantum-mechanical predictions.

Original language	English
Journal	Physical Review Letters
Volume	96
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.96.047006
Publication status	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.96.047006

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Grajcar, M., Izmalkov, A., Van Der Ploeg, S. H. W., Linzen, S., Plecenik, T., Wagner, T., Hübner, U., Il'ichev, E., Meyer, H. G., Smirnov, A. Y., Love, P. J., Maassen Van Den Brink, A., Amin, M. H. S., Uchaikin, S., & Zagoskin, A. M. (2006). Four-qubit device with mixed couplings. Physical Review Letters, 96(4). https://doi.org/10.1103/PhysRevLett.96.047006

Four-qubit device with mixed couplings. / Grajcar, M.; Izmalkov, A.; Van Der Ploeg, S. H W; Linzen, S.; Plecenik, T.; Wagner, Th; Hübner, U.; Il'ichev, E.; Meyer, H. G.; Smirnov, A. Yu; Love, Peter J.; Maassen Van Den Brink, Alec; Amin, M. H S; Uchaikin, S.; Zagoskin, A. M.

In: Physical Review Letters, Vol. 96, No. 4, 2006.

Research output: Contribution to journal › Article

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AU - Grajcar, M.

AU - Izmalkov, A.

AU - Van Der Ploeg, S. H W

AU - Linzen, S.

AU - Plecenik, T.

AU - Wagner, Th

AU - Hübner, U.

AU - Il'ichev, E.

AU - Meyer, H. G.

AU - Smirnov, A. Yu

AU - Love, Peter J.

AU - Maassen Van Den Brink, Alec

AU - Amin, M. H S

AU - Uchaikin, S.

AU - Zagoskin, A. M.

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