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Quantum state transfer in imperfect artificial spin networks

M. Paternostro·G. M. Palma·M. S. Kim·G. Falci
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Abstract

High-fidelity quantum computation and quantum state transfer are possible in short spin chains. We exploit a system based on a dispersive qubit-boson interaction to mimic XY coupling. In this model, the usually assumed nearest-neighbors coupling is no more valid: all the qubits are mutually coupled. We analyze the performances of our model for quantum state transfer showing how pre-engineered coupling rates allow for nearly optimal state transfer. We address a setup of superconducting qubits coupled to a microstrip cavity in which our analysis may be applied.

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M. Paternostro, G. M. Palma, M. S. Kim, G. Falci. 2004-07-24. Quantum state transfer in imperfect artificial spin networks. https://doi.org/10.1103/physreva.71.042311

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