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Tunneling Qubit Operation on a Protected Josephson Junction Array

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arxiv 0908.3358 v2 pith:VYFVVK55 submitted 2009-08-24 quant-ph

classification quant-ph
keywords arrayprotecteddegeneracyjosephsonjunctionoperationquantumqubit
verification ladder T0 review T1 audit T2 compute T3 formal
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We discuss a protected quantum computation process based on a hexagon Josephson junction array. Qubits are encoded in the punctured array, which is topologically protected. The degeneracy is related to the number of holes. The topological degeneracy is lightly shifted by tuning the flux through specific hexagons. We also show how to perform single qubit operation and basic quantum gate operations in this system.

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