[LUG.ro Mix] Long-range coupling and scalable architecture for superconducting flux qubits

[Horacio Castellini]

Para los que les interese como va el arte de la computadora cuántica... 
(a Febrero de 2007)

http://lanl.arxiv.org/abs/cond-mat/0702620

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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 in PRB 70, 140501 (2004) and extend it to allow approximately 
500 MHz coupling of square flux qubits, 50 um a side, at a distance of 
up to several mm. This mechanism is then used as the basis of two 
scalable architectures for flux qubits taking into account crosstalk, 
incorporation of classical control circuitry, power dissipation, and 
fault-tolerant considerations such as permitting a universal set of 
logical gates, parallelism, measurement and initialization, and data 
mobility.

	

	
		
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