Stabilization of Kerr-cat qubits with quantum circuit refrigerator

Abstract A periodically driven superconducting nonlinear resonator can implement a Kerr-cat qubit, which provides a promising route to a quantum computer with a long lifetime. However, the system is vulnerable to pure dephasing, which causes unwanted excitations outside the qubit subspace. Therefore...

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Bibliographic Details
Main Authors: Shumpei Masuda, Shunsuke Kamimura, Tsuyoshi Yamamoto, Takaaki Aoki, Akiyoshi Tomonaga
Format: Article
Language:English
Published: Nature Portfolio 2025-02-01
Series:npj Quantum Information
Online Access:https://doi.org/10.1038/s41534-025-00974-6
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