Correction of chain losses in trapped ion quantum computers

• URL: http://arxiv.org/abs/2511.16632v1
• Date: Thu, 20 Nov 2025 18:37:38 GMT
• Title: Correction of chain losses in trapped ion quantum computers
• Authors: Nolan J. Coble, Min Ye, Nicolas Delfosse,
• Abstract summary: ion loss in long chains must be addressed because it destabilizes the entire chain resulting in the loss of all qubits of the chain.<n>We propose a solution to the chain loss problem based on (1) a quantum error correction code distributed over multiple long chains, (2) beacon qubits within each long chain to detect the loss of a chain, and (3) a decoder adapted to correct a combination of circuit faults and erasures after beacon qubits convert chain losses into erasures.
• Score: 5.3044526424637874
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Neutral atom quantum computers and to a lesser extent trapped ions may suffer from atom loss. In this work, we investigate the impact of atom loss in long chains of trapped ions. Even though this is a relatively rare event, ion loss in long chains must be addressed because it destabilizes the entire chain resulting in the loss of all the qubits of the chain. We propose a solution to the chain loss problem based on (1) a quantum error correction code distributed over multiple long chains, (2) beacon qubits within each long chain to detect the loss of a chain, and (3) a decoder adapted to correct a combination of circuit faults and erasures after beacon qubits convert chain losses into erasures. We verify the chain loss correction capability of our scheme through circuit level simulations with a distributed $[[72,12,6]]$ BB code with beacon qubits.

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