Superconducting qubit network with controllable nearest neighbor coupling

Details Superconducting qubit network with controllable nearest neighbor coupling Superconducting qubit network with controllable nearest neighbor coupling

2005-04-11

arxiv.org/abs/cond-mat/0504250v1

New J. Phys. 7 (2005) 178

Physics

Condensed Matter

Superconductivity

23 pages, 4 figures

Scientific paper

10.1088/1367-2630/7/1/178

We investigate the design and functionality of a network of loop-shaped charge qubits with switchable nearest-neighbor coupling. The qubit coupling is achieved by placing large Josephson junctions at the intersections of the qubit loops and selectively applying bias currents. The network is scalable and makes it possible to perform a universal set of quantum gates. The coupling scheme allows gate operation at the charge degeneracy point of each qubit, and also applies to charge-phase qubits. Additional Josephson junctions included in the qubit loops for qubit readout can also be employed for qubit coupling.

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