Generation of Superposition States and Charge-Qubit Relaxation Probing in a Circuit

a) Schematic setup, with the central transmission line (resonator) capacitively coupled to the source and drain, and capacitively coupled to a SQUID-type qubit. (b) Variable energy levels of the qubit (0 < n < 1), with an external classical magnetic flux Φx(t). The resonator field is always blue detuned from that transition. J. Phys. B: At. Mol. Opt. Phys. 44 (2011) 135503. Also in http://xxx.lanl.gov/abs/1104.5189

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