Journal article

Long-range coupling and scalable architecture for superconducting flux qubits

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

PHYSICAL REVIEW B | AMER PHYSICAL SOC | Published : 2007

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 dis..

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University of Melbourne Researchers