Quantum gates with oscillating exchange interaction

Abstract Two-qubit gates between spin qubits are often performed using a rectangular or an adiabatic exchange interaction pulse resulting in a CZ gate. An oscillating exchange pulse not only performs a CZ gate, but also enables the iSWAP gate, which offers more flexibility to perform quantum algorit...

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Bibliographic Details
Published inQuantum science and technology Vol. 9; no. 1; pp. 15020 - 15027
Main Authors Nguyen, Daniel Q L, Heinz, Irina, Burkard, Guido
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.01.2024
Subjects
oscillating exchange interaction
quantum computing
quantum gates
spin qubits
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Summary:Abstract Two-qubit gates between spin qubits are often performed using a rectangular or an adiabatic exchange interaction pulse resulting in a CZ gate. An oscillating exchange pulse not only performs a CZ gate, but also enables the iSWAP gate, which offers more flexibility to perform quantum algorithms. We provide a detailed description for two-qubit gates using resonant and off-resonant exchange pulses, give conditions for performing the respective gates, and compare their performance to the state-of-the-art static counterpart. We find that for relatively low charge noise the gates still perform reliably and compare to the conventional CZ gate.
Bibliography:QST-102356.R1
ISSN:2058-9565
2058-9565
DOI:10.1088/2058-9565/acef54