Solid-State Quantum Communication With Josephson Arrays

Details Solid-State Quantum Communication With Josephson Arrays Solid-State Quantum Communication With Josephson Arrays

2004-08-07

arxiv.org/abs/quant-ph/0408057v1

Phys. Rev. B 71, 100501(R) (2005).

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevB.71.100501

Josephson junction arrays can be used as quantum channels to transfer quantum information between distant sites. In this work we discuss simple protocols to realize state transfer with high fidelity. The channels do not require complicate gating but use the natural dynamics of a properly designed array. We investigate the influence of static disorder both in the Josephson energies and in the coupling to the background gate charges, as well as the effect of dynamical noise. We also analyze the readout process, and its backaction on the state transfer.

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