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IEEE Network

State Engineering for Quantum Networks

Andrea Conti, Andrea Giani, Moe Z. Win

Published Apr 28, 2026• 0 citations
Publisher
DOI
10.1109/mnet.2026.3653313

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Quantum state transfer is an important task in quantum information processing. It is known that one can engineer the couplings of a one-dimensional spin chain to achieve the goal of perfect state transfer. To leverage the value of these spin chains, a spin star is potentially useful for connecting different parts of a quantum network. In this work, we extend the spin-chain engineering problem to the problems with a topology of a star network. We show that a permanently coupled spin star can function as a network switch for transferring quantum states selectively from one node to another by varying the local potentials only. Together with one-dimensional chains, this result allows applications of quantum state transfer to be applied to more general quantum networks.