Sign- and magnitude-tunable coupler for superconducting flux qubits

R. Harris; A. J. Berkley; M. W. Johnson; P. Bunyk; S. Govorkov; M. C. Thom; S. Uchaikin; A. B. Wilson; J. Chung; E. Holtham; J. D. Biamonte; A. Yu Smirnov; M. H.S. Amin; Alec Maassen Van Den Brink

doi:10.1103/PhysRevLett.98.177001

Sign- and magnitude-tunable coupler for superconducting flux qubits

R. Harris
, A. J. Berkley
, M. W. Johnson
, P. Bunyk
, S. Govorkov
, M. C. Thom
, S. Uchaikin
, A. B. Wilson
, J. Chung
, E. Holtham
, J. D. Biamonte
, A. Yu Smirnov
, M. H.S. Amin
, Alec Maassen Van Den Brink

D-Wave Systems Inc.
Simon Fraser University

Résultats de recherche: Contribution à un journal › Article publié dans une revue, révisé par les pairs › Revue par des pairs

97 Citations (Scopus)

Résumé

We experimentally confirm the functionality of a coupling element for flux-based superconducting qubits, with a coupling strength J whose sign and magnitude can be tuned in situ. To measure the effective J, the ground state of a coupled two-qubit system has been mapped as a function of the local magnetic fields applied to each qubit. The state of the system is determined by directly reading out the individual qubits while tunneling is suppressed. These measurements demonstrate that J can be tuned from antiferromagnetic through zero to ferromagnetic.

langue originale	Anglais
Numéro d'article	177001
journal	Physical Review Letters
Volume	98
Numéro de publication	17
Les DOIs	https://doi.org/10.1103/PhysRevLett.98.177001
état	Publié - 23 avr. 2007
Modification externe	Oui

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10.1103/PhysRevLett.98.177001

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Harris, R., Berkley, A. J., Johnson, M. W., Bunyk, P., Govorkov, S., Thom, M. C., Uchaikin, S., Wilson, A. B., Chung, J., Holtham, E., Biamonte, J. D., Smirnov, A. Y., Amin, M. H. S., & Maassen Van Den Brink, A. (2007). Sign- and magnitude-tunable coupler for superconducting flux qubits. Physical Review Letters, 98(17), Article 177001. https://doi.org/10.1103/PhysRevLett.98.177001

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AU - Harris, R.

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AU - Johnson, M. W.

AU - Bunyk, P.

AU - Govorkov, S.

AU - Thom, M. C.

AU - Uchaikin, S.

AU - Wilson, A. B.

AU - Chung, J.

AU - Holtham, E.

AU - Biamonte, J. D.

AU - Smirnov, A. Yu

AU - Amin, M. H.S.

AU - Maassen Van Den Brink, Alec

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