Paper

{
  "raw_xml": "<entry>\n    <id>http://arxiv.org/abs/2602.20452v1</id>\n    <title>A Unified Error Correction Code for Universal Quantum Computing with Identical Particles</title>\n    <updated>2026-02-24T01:23:11Z</updated>\n    <link href='https://arxiv.org/abs/2602.20452v1' rel='alternate' type='text/html'/>\n    <link href='https://arxiv.org/pdf/2602.20452v1' rel='related' title='pdf' type='application/pdf'/>\n    <summary>We present a universal fault-tolerant quantum computing architecture based on identical particle qubits (IPQs), where we find that the first-order IPQ - bath interaction fundamentally differs from the conventional first-order qubit-bath interaction. This key distinction necessitates a redesign of existing strategies to fight decoherence. We propose that the simplest quantum error correction code can be realized directly within the physical qubit, provided that conventional correction and restoration are generalized beyond unitary operations to employ physically implementable reversal operations -- naturally placing logical and physical qubits on equal footing. We further demonstrate that dynamical decoupling (DD) remains effective within this unified framework, and that a decoherence-free subspace (DFS) -- like structure emerges. Unlike previous approximate treatments, our analytically solvable IPQ-Bath model enables rigorous testing of these strategies, with numerical simulations validating their effectiveness.</summary>\n    <category scheme='http://arxiv.org/schemas/atom' term='quant-ph'/>\n    <published>2026-02-24T01:23:11Z</published>\n    <arxiv:comment>The manuscript was submitted to Physical Review Letters on June 13, 2025 (Manuscript ID: LF20042). One of the referee reports stated: In summary, ..., it lacks the broad impact and immediate relevance necessary for Physical Review Letters. I recommend that the manuscript be transferred to a more specialized journal, such as Physical Review A</arxiv:comment>\n    <arxiv:primary_category term='quant-ph'/>\n    <author>\n      <name>S. L. Wu</name>\n    </author>\n    <author>\n      <name>Lian-Ao Wu</name>\n    </author>\n  </entry>"
}