Noise-resilient edge modes on a chain of superconducting qubits

2022/11/17 by Xiao Mi, Michael Sonner, M. Y. Niu +97 · 1 voice · 4 citations
Physics and Astronomy · #Quantum and electron transport phenomena #Quantum many-body systems #Topological Materials and Phenomena

paper · doi:10.1126/science.abq5769

openalex publication_date 2022/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

Inherent symmetry of a quantum system may protect its otherwise fragile states. Leveraging such protection requires testing its robustness against uncontrolled environmental interactions. Using 47 superconducting qubits, we implement the one-dimensional kicked Ising model, which exhibits nonlocal Majorana edge modes (MEMs) with [Formula: see text] parity symmetry. We find that any multiqubit Pauli operator overlapping with the MEMs exhibits a uniform late-time decay rate comparable to single-qubit relaxation rates, irrespective of its size or composition. This characteristic allows us to accurately reconstruct the exponentially localized spatial profiles of the MEMs. Furthermore, the MEMs are found to be resilient against certain symmetry-breaking noise owing to a prethermalization mechanism. Our work elucidates the complex interplay between noise and symmetry-protected edge modes in a solid-state environment.

Citations

• Helical Liquids and Majorana Bound States in Quantum Wires
• Observation of Majorana fermions in ferromagnetic atomic chains on a superconductor
• Fault-tolerant quantum computation by anyons
• Two soluble models of an antiferromagnetic chain
• Non-Abelian anyons and topological quantum computation
• Phase Structure of Driven Quantum Systems
• Time-crystalline eigenstate order on a quantum processor

Cited by

• Breakdown of symmetry constraint in Floquet topological superconductor
• Shift of quantum critical point of discrete time crystal on a noisy quantum simulator
• Fourier Neural Operators for Time-Periodic Quantum Systems: Learning Floquet Hamiltonians, Observable Dynamics, and Operator Growth
• Robust and Efficient Quantum Reservoir Computing with Discrete Time Crystal

Discussions

• I am now working on the kicked Ising model mentioned in Google's paper . I want to solve the energy spectrum of kicked Ising model in both spin formalism and Fermion formalism . The two are connected [stackexchange, 2 points]

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• Symmetry-protected states of interacting qubits in superconducting quantum circuits
• Quantum Frustration as a Protection Mechanism in Non-Topological Majorana Qubits
• Signatures of Majorana Zero-Modes in an isolated one-dimensional superconductor
• Quantify the stability of Majorana qubits through Rabi beat
• Majorana Edge Modes as Quantum Memory for Topological Quantum Computing