Print Email Facebook Twitter Strong Coupling of a Quantum Oscillator to a Flux Qubit at Its Symmetry Point Title Strong Coupling of a Quantum Oscillator to a Flux Qubit at Its Symmetry Point Author Fedorov, A. Feofanov, A.K. Macha, P. Forn-Díaz, P. Harmans, C.J.P.M. Mooij, J.E. Faculty Applied Sciences Department Kavli Institute of Nanoscience Date 2010-08-05 Abstract A flux qubit biased at its symmetry point shows a minimum in the energy splitting (the gap), providing protection against flux noise. We have fabricated a qubit of which the gap can be tuned fast and have coupled this qubit strongly to an LC oscillator. We show full spectroscopy of the qubit-oscillator system and generate vacuum Rabi oscillations. When the gap is made equal to the oscillator frequency ?osc we find the largest vacuum Rabi splitting of ?0.1?osc. Here being at resonance coincides with the optimal coherence of the symmetry point. To reference this document use: http://resolver.tudelft.nl/uuid:23266502-1712-4233-a516-ecc0f645f6ac DOI https://doi.org/10.1103/PhysRevLett.105.060503 Publisher American Physical Society ISSN 0031-9007 Source http://prl.aps.org/abstract/PRL/v105/i6/e060503 Source Physical Review Letters, 105 (6), 2010 Part of collection Institutional Repository Document type journal article Rights (c) 2010 The Author(s); American Physical Society Files PDF Fedorov_2010.pdf 2.28 MB Close viewer /islandora/object/uuid:23266502-1712-4233-a516-ecc0f645f6ac/datastream/OBJ/view