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DOE OSTI · 22314836

Controllable quantum information network with a superconducting system

Zhang, Feng-yang·Liu, Bao·Chen, Zi-hong·Wu, Song-lin·Song, He-shan
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Abstract

We propose a controllable and scalable architecture for quantum information processing using a superconducting system network, which is composed of current-biased Josephson junctions (CBJJs) as tunable couplers between the two superconducting transmission line resonators (TLRs), each coupling to multiple superconducting qubits (SQs). We explicitly demonstrate that the entangled state, the phase gate, and the information transfer between any two selected SQs can be implemented, respectively. Lastly, numerical simulation shows that our scheme is robust against the decoherence of the system. -- Highlights: •An architecture for quantum information processing is proposed. •The quantum information transfer between any two selected SQs is implemented. •This proposal is robust against the decoherence of the system. •This architecture can be fabricated on a chip down to the micrometer scale.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICSCOMPUTERIZED SIMULATIONCOUPLINGDATA PROCESSINGELECTRIC CURRENTSJOSEPHSON JUNCTIONSQUANTUM ENTANGLEMENTQUANTUM MECHANICSQUBITSRESONATORS

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Zhang, Feng-yang, Liu, Bao, Chen, Zi-hong, Wu, Song-lin, Song, He-shan. 2014-07-15. Controllable quantum information network with a superconducting system. https://doi.org/10.1016/j.aop.2014.04.008

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