Driving superconducting qubits into chaos

• URL: http://arxiv.org/abs/2310.17698v2
• Date: Sun, 18 Feb 2024 06:14:07 GMT
• Title: Driving superconducting qubits into chaos
• Authors: Jorge Ch\'avez-Carlos, Miguel A. Prado Reynoso, Ignacio Garc\'ia-Mata, Victor S. Batista, Francisco P\'erez-Bernal, Diego A. Wisniacki, Lea F. Santos
• Abstract summary: Kerr-cat qubits offer advantages toward the encoding and manipulation of error-protected quantum information. Increasing nonlinearities can enable faster gate times, but can also induce chaos and melt the qubit away. The danger zone for parametric quantum computation is also a potential playground for investigating quantum chaos with driven superconducting circuits.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Kerr parametric oscillators are potential building blocks for fault-tolerant quantum computers. They can stabilize Kerr-cat qubits, which offer advantages toward the encoding and manipulation of error-protected quantum information. The recent realization of Kerr-cat qubits made use of the nonlinearity of the SNAIL transmon superconducting circuit and a squeezing drive. Increasing nonlinearities can enable faster gate times, but, as shown here, can also induce chaos and melt the qubit away. We determine the region of validity of the Kerr-cat qubit and discuss how its disintegration could be experimentally detected. The danger zone for parametric quantum computation is also a potential playground for investigating quantum chaos with driven superconducting circuits.

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