Investigating Surface Loss Effects in Superconducting Transmon Qubits | IEEE Journals & Magazine | IEEE Xplore

Investigating Surface Loss Effects in Superconducting Transmon Qubits


Abstract:

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 pos...Show More

Abstract:

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.
Published in: IEEE Transactions on Applied Superconductivity ( Volume: 27, Issue: 1, January 2017)
Article Sequence Number: 1700205
Date of Publication: 16 November 2016

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