Autonomous Quantum Error Correction of Spin-Oscillator Hybrid Qubits

2026/04/13 by Sungjoo Cho, Ju-yeon Gyhm, Hyukjoon Kwon +1 · 1 voice
Physics and Astronomy · #quant-ph #physics.atom-ph #physics.optics

paper · pdf

arxiv published 2026/04/13 · arxiv updated 2026/05/28

Abstract

We propose a novel measurement-free scheme for stabilizing a spin-oscillator hybrid qubit via autonomous quantum error correction. The engineered Lindbladian renders the code space into an attractive steady-state subspace, realized by coupling the storage mode to a rapidly cooled bath through a controlled beam-splitter and spin-dependent displacement interactions. The continuous variable-discrete variable hybrid approach to autonomous quantum error correction preserves the hardware efficiency of conventional dissipation engineering while simplifying the required system-bath coupling. The construction is compatible with simple logical gates and leverages primitives already demonstrated in experimental platforms, such as trapped-ion systems, suggesting a practical route to hardware-efficient, noise-biased logical qubits without repeated syndrome measurements and feedforward.

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Discussions

• Autonomous Quantum Error Correction of Spin-Oscillator Hybrid Qubits This research presents a clever approach to quantum error correction that could dramatically reduce the overhead typically required [bsky, 1 points, 0 comments]