Doug T McClure, Hanhee Paik, et al.
Physical Review Applied
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.
Doug T McClure, Hanhee Paik, et al.
Physical Review Applied
Conal E. Murray, E.T. Ryan, et al.
Microelectronic Engineering
Conal E. Murray
Journal of Applied Physics
Kazuya Ohuchi, Christian Lavoie, et al.
IWJT 2008