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de Graaf, S E*; Leppakangas, J*; Adamyan, A*; Danilov, A V*; Lindstrom, T; Fogelstrom, M*; Bauch, T*; Johansson, G*; Kubatkin, S E* (2013) Charge qubit coupled to an intense microwave electromagnetic field in a superconducting Nb device: evidence for photon-assisted quasiparticle tunneling. Phys. Rev. Lett., 111 (13). 137002

Leppakangas, J*; de Graaf, S E*; Adamyan, A*; Fogelstrom, M*; Danilov, A V*; Lindstrom, T; Kubatkin, S E*; Johansson, G* (2013) Effects of quasiparticle tunneling in a circuit-QED realization of a strongly driven two-level system. J. Phys. B, At. Mol. Opt. Phys., 46 (22). 224019