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

Research output: Contribution to journal › Article

69 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 languageEnglish
JournalPhysical Review Letters
Volume96
Issue number4
DOIs
Publication statusPublished - 2006

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impedance measurement
Josephson junctions
low frequencies
ground state
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Grajcar, M., Izmalkov, A., Van Der Ploeg, S. H. W., Linzen, S., Plecenik, T., Wagner, T., ... 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

Grajcar, M, Izmalkov, A, Van Der Ploeg, SHW, Linzen, S, Plecenik, T, Wagner, T, Hübner, U, Il'ichev, E, Meyer, HG, Smirnov, AY, Love, PJ, Maassen Van Den Brink, A, Amin, MHS, Uchaikin, S & Zagoskin, AM 2006, 'Four-qubit device with mixed couplings', Physical Review Letters, vol. 96, no. 4. https://doi.org/10.1103/PhysRevLett.96.047006
Grajcar M, Izmalkov A, Van Der Ploeg SHW, Linzen S, Plecenik T, Wagner T et al. Four-qubit device with mixed couplings. Physical Review Letters. 2006;96(4). https://doi.org/10.1103/PhysRevLett.96.047006
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. / Four-qubit device with mixed couplings. In: Physical Review Letters. 2006 ; Vol. 96, No. 4.
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AU - Grajcar, M.

AU - Izmalkov, A.

AU - Van Der Ploeg, S. H W

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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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