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Fast high-fidelity multiqubit state transfer with long-range interactions
Yifan Hong, A. Lucas·September 14, 2020·DOI: 10.1103/PhysRevA.103.042425
Physics
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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.