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We present an end-to-end architecture for fault-tolerant continuous variable (CV) quantum computation using only passive on-chip components that can produce photonic qubits above the fault tolerance threshold with probabilities above 90%, and encodes logical qubits using physical qubits sampled from a distribution around the fault tolerance threshold. By requiring only low photon number resolution, the architecture enables the use of high-bandwidth photodetectors in CV quantum computing. Simulations of our qubit generation and logical encoding processes show a Gaussian cluster squeezing threshold of 12 dB to 13 dB. Additionally, we present a novel magic state generation protocol which requires only 13 dB of cluster squeezing to produce magic states with an order of magnitude higher probability than existing approaches, opening up the path to universal fault-tolerant quantum computation at less than 13 dB of cluster squeezing.<\/jats:p>","DOI":"10.22331\/q-2025-07-14-1796","type":"journal-article","created":{"date-parts":[[2025,7,14]],"date-time":"2025-07-14T15:46:33Z","timestamp":1752507993000},"page":"1796","update-policy":"https:\/\/doi.org\/10.22331\/q-crossmark-policy-page","source":"Crossref","is-referenced-by-count":3,"title":["End-to-end switchless architecture for fault-tolerant photonic quantum computing"],"prefix":"10.22331","volume":"9","author":[{"given":"Paul","family":"Renault","sequence":"first","affiliation":[{"name":"QC82 Inc., 7757 Baltimore Ave, College Park, MD 20740"}]},{"given":"Patrick","family":"Yard","sequence":"additional","affiliation":[{"name":"QC82 Inc., 7757 Baltimore Ave, College Park, MD 20740"}]},{"given":"Raphael C.","family":"Pooser","sequence":"additional","affiliation":[{"name":"QC82 Inc., 7757 Baltimore Ave, College Park, MD 20740"}]},{"given":"Miller","family":"Eaton","sequence":"additional","affiliation":[{"name":"QC82 Inc., 7757 Baltimore Ave, College Park, MD 20740"}]},{"given":"Hussain Asim","family":"Zaidi","sequence":"additional","affiliation":[{"name":"QC82 Inc., 7757 Baltimore Ave, College Park, MD 20740"}]}],"member":"9598","published-online":{"date-parts":[[2025,7,14]]},"reference":[{"key":"0","doi-asserted-by":"publisher","unstructured":"Richard P. 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