Srikanth J. Srinivasan, Neereja M. Sundaresan, et al.
Physical Review A - AMO
Superconducting qubits are sensitive to a variety of loss mechanisms including dielectric loss from interfaces. By changing the physical footprint of the qubit, it is possible to modulate sensitivity to surface loss. Here, we show a systematic study of planar superconducting transmons of differing physical footprints to optimize the qubit design for maximum coherence. We find that qubits with small footprints are limited by surface loss and that qubits with large footprints are limited by other loss mechanisms, which are currently not understood.
Srikanth J. Srinivasan, Neereja M. Sundaresan, et al.
Physical Review A - AMO
Conal E. Murray, Jean Jordan-Sweet, et al.
Applied Physics Letters
Nicholas T. Bronn, Baleegh Abdo, et al.
WOLTE 2016
Colm A. Ryan, Blake Johnson, et al.
Physical Review A - AMO