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arXiv · 2610.23208

Exponential-SWAP gate between bosonic motional modes of trapped ions

E. J. W. Koh·Rongjie Zhang·Dzmitry Matsukevich
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Abstract

The exponential-SWAP (eSWAP) gate generates a coherent superposition of identity and SWAP operations, with continuously tunable amplitudes. We experimentally implement this gate between two bosonic motional modes of trapped ions using spin-independent and spin-dependent beam splitter interactions. Measurements of selected slices of the joint characteristic function for distinct input states test the gate and demonstrate continuous control of the identity-SWAP superposition. This implementation provides a tunable interaction for hybrid qubit-bosonic quantum information processing.

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E. J. W. Koh, Rongjie Zhang, Dzmitry Matsukevich. 2026-10-16. Exponential-SWAP gate between bosonic motional modes of trapped ions. https://arxiv.org/abs/2610.23208

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