Long-range coupling and scalable architecture for superconducting flux qubits

Austin G. Fowler, William F. Thompson, Zhizhong Yan, Ashley M. Stephens, Britton Plourde, Frank K. Wilhelm

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Constructing a fault-tolerant quantum computer is a daunting task. Given any design, it is possible to determine the maximum error rate of each type of component that can be tolerated while still permitting arbitrarily large-scale quantum computation. It is an underappreciated fact that including an appropriately designed mechanism enabling long-range qubit coupling or transport substantially increases the maximum tolerable error rates of all components. With this thought in mind, we take the superconducting flux qubit coupling mechanism described by Plourde [Phys. Rev. B 70, 140501(R) (2004)] and extend it to allow approximately 500 MHz coupling of square flux qubits, 50 μm a side, at a distance of up to several millimeters. This mechanism is then used as the basis of two scalable architectures for flux qubits taking into account cross-talk and fault-tolerant considerations such as permitting a universal set of logical gates, parallelism, measurement and initialization, and data mobility.

Original languageEnglish (US)
Article number174507
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number17
DOIs
StatePublished - Nov 12 2007

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Quantum computers
Fluxes
quantum computers
quantum computation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Long-range coupling and scalable architecture for superconducting flux qubits. / Fowler, Austin G.; Thompson, William F.; Yan, Zhizhong; Stephens, Ashley M.; Plourde, Britton; Wilhelm, Frank K.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 76, No. 17, 174507, 12.11.2007.

Research output: Contribution to journalArticle

Fowler, Austin G. ; Thompson, William F. ; Yan, Zhizhong ; Stephens, Ashley M. ; Plourde, Britton ; Wilhelm, Frank K. / Long-range coupling and scalable architecture for superconducting flux qubits. In: Physical Review B - Condensed Matter and Materials Physics. 2007 ; Vol. 76, No. 17.
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