Direct Josephson coupling between superconducting flux qubits

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Grajcar, M. and Izmalkov, A. and Ploeg, S.H.W. van der and Linzen, S. and Ilíchev, E. and Wagner, Th. and Huebner, U. (2005) Direct Josephson coupling between superconducting flux qubits. Physical Review B: Condensed matter and materials physics, 72 (2). 020503. ISSN 1098-0121

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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.
Item Type:Article
Copyright:© 2005 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/57376
Official URL:http://dx.doi.org/10.1103/PhysRevB.72.020503
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