Quantum state transfer in imperfect artificial spin networks

Details Quantum state transfer in imperfect artificial spin networks Quantum state transfer in imperfect artificial spin networks

2004-07-07

arxiv.org/abs/quant-ph/0407058v2

Phys. Rev. A 71, 042311 (2005).

Physics

Quantum Physics

4 pages, 3 figures, RevTeX4

Scientific paper

10.1103/PhysRevA.71.042311

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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