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This research demonstrates a novel exponential-SWAP (eSWAP) gate between bosonic motional modes of trapped ions, enabling continuous control over superpositions of identity and SWAP operations. By utilizing spin-independent and spin-dependent beam splitter interactions, the study establishes a tunable interaction crucial for hybrid qubit-bosonic quantum information processing architectures.

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Exponential-SWAP gate between bosonic motional modes of trapped ions

arXivOctober 19, 20261 min read

arXiv:2610.23208v1 Announce Type: new 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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