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First, we construct their moduli space as a quotient of groups and exhibit it as a fiber bundle over the moduli space of symplectically integral lattices. We then establish the Gottesman\u2013Zhang conjecture for logical GKP Clifford operations, showing that all such gates arise from parallel transport with respect to a flat connection on this space. Specifically, non-trivial Clifford operations correspond to topologically non-contractible paths on the space of GKP codes, while logical identity operations correspond to contractible paths.<\/jats:p>","DOI":"10.22331\/q-2025-10-29-1899","type":"journal-article","created":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T13:16:08Z","timestamp":1761743768000},"page":"1899","update-policy":"https:\/\/doi.org\/10.22331\/q-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["Fiber Bundle Fault Tolerance of GKP Codes"],"prefix":"10.22331","volume":"9","author":[{"given":"Ansgar G.","family":"Burchards","sequence":"first","affiliation":[{"name":"Dahlem Center for Complex Quantum Systems, Physics Department, Freie Universit\u00e4t Berlin, Arnimallee 14, 14195 Berlin, Germany"}]},{"given":"Steven T.","family":"Flammia","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Virginia Tech, Alexandria, USA"},{"name":"Phasecraft Inc., Washington DC, USA"}]},{"given":"Jonathan","family":"Conrad","sequence":"additional","affiliation":[{"name":"Dahlem Center for Complex Quantum Systems, Physics Department, Freie Universit\u00e4t Berlin, Arnimallee 14, 14195 Berlin, Germany"},{"name":"Helmholtz-Zentrum Berlin f\u00fcr Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany"}]}],"member":"9598","published-online":{"date-parts":[[2025,10,29]]},"reference":[{"key":"0","doi-asserted-by":"publisher","unstructured":"Peter W. 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