The phase of the two-photon drive tunes Liouvillian exceptional points of order 2 and 3 in a cat qubit, identified by a winding-number topological invariant while preserving logical subspace fidelity.
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Perfect displacement of superconducting resonators is achieved via fast-forward scaling of drive amplitude or detuning, enabling high-speed R_ZZ gates in Kerr-cat qubits.
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Controllable non-Hermitian topology in a dynamically protected cat qubit
The phase of the two-photon drive tunes Liouvillian exceptional points of order 2 and 3 in a cat qubit, identified by a winding-number topological invariant while preserving logical subspace fidelity.
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Perfect displacement of a superconducting resonator via fast-forward scaling and its application to high-speed $R_{ZZ}$ gates in Kerr-cat qubits
Perfect displacement of superconducting resonators is achieved via fast-forward scaling of drive amplitude or detuning, enabling high-speed R_ZZ gates in Kerr-cat qubits.