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arXiv · 2009.06587

Fast high-fidelity multi-qubit state transfer with long-range interactions

Yifan Hong·Andrew Lucas
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Abstract

We describe an efficient protocol to perform quantum state transfer using Hamiltonian dynamics with long-range interactions. The time to transfer $n$ qubits a sufficiently large distance is proportional to $\sqrt{n}$. Even without error correction, the fidelity of this multi-qubit state transfer process remains finite for arbitrarily well-separated qubits in the presence of uncorrelated random errors in coupling constants.

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Yifan Hong, Andrew Lucas. 2020-09-14. Fast high-fidelity multi-qubit state transfer with long-range interactions. https://doi.org/10.1103/physreva.103.042425

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