Direct Josephson coupling between superconducting flux qubits

M. Grajcar; A. Izmalkov; S H.W. van der Ploeg; S. Linzen; E. Il'ichev; Th. Wagner; U. Hübner; H.-G. Meyer; A. Maassen van den Brink; S. Uchaikin; A.M. Zagoskin

doi:10.1103/PhysRevB.72.020503

Direct Josephson coupling between superconducting flux qubits

M. Grajcar^*, A. Izmalkov, S H.W. van der Ploeg, S. Linzen, E. Il'ichev, Th. Wagner, U. Hübner, H.-G. Meyer, A. Maassen van den Brink, S. Uchaikin, A.M. Zagoskin

^*Corresponding author for this work

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

50 Citations (Scopus)

176 Downloads (Pure)

Abstract

We have demonstrated strong antiferromagnetic coupling between two three-junction flux qubits based on a shared Josephson junction, and therefore not limited by the small inductances of the qubit loops. The coupling sign and magnitude were measured by coupling the system to a high-quality superconducting tank circuit. Design modifications allowing to continuously tune the coupling strength and/or make the coupling ferromagnetic are discussed.

Original language	English
Article number	020503
Journal	Physical Review B (Condensed Matter and Materials Physics)
Volume	72
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.72.020503
Publication status	Published - 1 Jul 2005

Keywords

n/a OA procedure

Access to Document

10.1103/PhysRevB.72.020503

Cite this

Grajcar, M., Izmalkov, A., van der Ploeg, S. H. W., Linzen, S., Il'ichev, E., Wagner, T., Hübner, U., Meyer, H.-G., Maassen van den Brink, A., Uchaikin, S., & Zagoskin, A. M. (2005). Direct Josephson coupling between superconducting flux qubits. Physical Review B (Condensed Matter and Materials Physics), 72(2), Article 020503. https://doi.org/10.1103/PhysRevB.72.020503

@article{9f11e860f691466a83e57fba697d2cb2,

title = "Direct Josephson coupling between superconducting flux qubits",

abstract = "We have demonstrated strong antiferromagnetic coupling between two three-junction flux qubits based on a shared Josephson junction, and therefore not limited by the small inductances of the qubit loops. The coupling sign and magnitude were measured by coupling the system to a high-quality superconducting tank circuit. Design modifications allowing to continuously tune the coupling strength and/or make the coupling ferromagnetic are discussed.",

keywords = "n/a OA procedure",

author = "M. Grajcar and A. Izmalkov and {van der Ploeg}, {S H.W.} and S. Linzen and E. Il'ichev and Th. Wagner and U. H{\"u}bner and H.-G. Meyer and {Maassen van den Brink}, A. and S. Uchaikin and A.M. Zagoskin",

year = "2005",

month = jul,

day = "1",

doi = "10.1103/PhysRevB.72.020503",

language = "English",

volume = "72",

journal = "Physical Review B (Condensed Matter and Materials Physics)",

issn = "1098-0121",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Direct Josephson coupling between superconducting flux qubits

AU - Grajcar, M.

AU - Izmalkov, A.

AU - van der Ploeg, S H.W.

AU - Linzen, S.

AU - Il'ichev, E.

AU - Wagner, Th.

AU - Hübner, U.

AU - Meyer, H.-G.

AU - Maassen van den Brink, A.

AU - Uchaikin, S.

AU - Zagoskin, A.M.

PY - 2005/7/1

Y1 - 2005/7/1

N2 - We have demonstrated strong antiferromagnetic coupling between two three-junction flux qubits based on a shared Josephson junction, and therefore not limited by the small inductances of the qubit loops. The coupling sign and magnitude were measured by coupling the system to a high-quality superconducting tank circuit. Design modifications allowing to continuously tune the coupling strength and/or make the coupling ferromagnetic are discussed.

AB - We have demonstrated strong antiferromagnetic coupling between two three-junction flux qubits based on a shared Josephson junction, and therefore not limited by the small inductances of the qubit loops. The coupling sign and magnitude were measured by coupling the system to a high-quality superconducting tank circuit. Design modifications allowing to continuously tune the coupling strength and/or make the coupling ferromagnetic are discussed.

KW - n/a OA procedure

UR - http://www.scopus.com/inward/record.url?scp=33749159148&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.72.020503

DO - 10.1103/PhysRevB.72.020503

M3 - Article

SN - 1098-0121

VL - 72

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

IS - 2

M1 - 020503

ER -

Direct Josephson coupling between superconducting flux qubits

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this