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arXiv · 1301.0535

First-order sideband transitions with flux-driven asymmetric transmon qubits

J. D. Strand·Matthew Ware·Félix Beaudoin·T. A. Ohki·B. R. Johnson·Alexandre Blais·B. L. T. Plourde
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Abstract

We demonstrate rapid, first-order sideband transitions between a superconducting resonator and a frequency-modulated transmon qubit. The qubit contains a substantial asymmetry between its Josephson junctions leading to a linear portion of the energy band near the resonator frequency. The sideband transitions are driven with a magnetic flux signal of a few hundred MHz coupled to the qubit. This modulates the qubit splitting at a frequency near the detuning between the dressed qubit and resonator frequencies, leading to rates up to 85 MHz for exchanging quanta between the qubit and resonator.

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J. D. Strand, Matthew Ware, Félix Beaudoin, T. A. Ohki, B. R. Johnson, Alexandre Blais, B. L. T. Plourde. 2013-01-03. First-order sideband transitions with flux-driven asymmetric transmon qubits. https://doi.org/10.1103/physrevb.87.220505

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