Direct Josephson coupling between superconducting flux qubits

M. Grajcar; A. Izmalkov; S.H.W. van der Ploeg; S. Linzen; E. IlÍchev; Th. Wagner; U. Huebner

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. IlÍchev, Th. Wagner, U. Huebner

Faculty of Science and Technology

Research output: Contribution to journal › Article › Academic

47 Citations (Scopus)

160 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	Undefined
Pages (from-to)	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 - 2005

Keywords

IR-57376

Access to Document

10.1103/PhysRevB.72.020503

direct_josephson

Cite this

@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 = "IR-57376",

author = "M. Grajcar and A. Izmalkov and {van der Ploeg}, S.H.W. and S. Linzen and E. Il{\'I}chev and Th. Wagner and U. Huebner",

year = "2005",

doi = "10.1103/PhysRevB.72.020503",

language = "Undefined",

volume = "72",

pages = "020503",

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 - IlÍchev, E.

AU - Wagner, Th.

AU - Huebner, U.

PY - 2005

Y1 - 2005

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 - IR-57376

U2 - 10.1103/PhysRevB.72.020503

DO - 10.1103/PhysRevB.72.020503

M3 - Article

VL - 72

SP - 020503

JO - Physical review B: Condensed matter and materials physics

JF - Physical review B: Condensed matter and materials physics

SN - 1098-0121

IS - 2

ER -