Print Email Facebook Twitter Tuning the Gap of a Superconducting Flux Qubit Title Tuning the Gap of a Superconducting Flux Qubit Author Paauw, F.G. Fedorov, A. Harmans, C.J.P.M. Mooij, J.E. Faculty Applied Sciences Department Kavli Institute of Nanoscience Date 2009-03-06 Abstract We experimentally demonstrate the in situ tunability of the minimum energy splitting (gap) of a superconducting flux qubit by means of an additional flux loop. Pulses applied via a local control line allow us to tune the gap over a range of several GHz on a nanosecond time scale. The strong flux sensitivity of the gap (up to ~0:7 GHz/m?0) opens up the possibility to create different types of tunable couplings that are effective at the degeneracy point of the qubit. We investigate the dependence of the relaxation time and the Rabi frequency on the qubit gap. To reference this document use: http://resolver.tudelft.nl/uuid:81b7ea1a-f8a8-41fe-a0e9-9a4407f27806 DOI https://doi.org/10.1103/PhysRevLett.102.090501 Publisher American Physical Society ISSN 1079-7114 Source Physical Review Letters, 102 (9), 2009 Part of collection Institutional Repository Document type journal article Rights (c) 2009 The Author(s) ; American Physical Society Files PDF Paauw_2009.pdf 566.87 KB Close viewer /islandora/object/uuid:81b7ea1a-f8a8-41fe-a0e9-9a4407f27806/datastream/OBJ/view