{"paper":{"title":"Timing Jitter Induced by Stochastic Baseline Fluctuations in High-Count-Rate Superconducting Nanowire Single-Photon Detectors","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Stochastic baseline fluctuations from finite-memory readout cause count-rate-dependent timing jitter in SNSPDs.","cross_cats":["physics.optics","quant-ph"],"primary_cat":"physics.app-ph","authors_text":"Chaomeng Ding, Chenrui Wang, Dianpeng Wang, Hao Li, Hongxin Xu, Jia Huang, Jiamin Xiong, Lixing You, You Xiao, Zhen Wan","submitted_at":"2026-05-14T03:27:05Z","abstract_excerpt":"Superconducting nanowire single-photon detectors (SNSPDs) have demonstrated timing jitter in the few-picosecond regime, yet their timing resolution deteriorates substantially under high-count-rate operation. Existing interpretations mainly attribute this degradation to deterministic waveform distortions, such as multiphoton responses and pulse pile-up, yet the experimentally observed jitter broadening at high count rates cannot be fully accounted for within this picture. Here, we show that stochastic baseline fluctuations arising from finite-memory readout dynamics constitute an intrinsic sour"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"stochastic baseline fluctuations arising from finite-memory readout dynamics constitute an intrinsic source of the count-rate-dependent timing jitter in SNSPD systems","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The recovery response shape is deterministic and memory is strictly finite; any unmodeled nonlinear or history-dependent detector dynamics would invalidate the quantitative mapping from photon statistics to baseline variance.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Stochastic baseline fluctuations from finite-memory readout dynamics form an intrinsic source of count-rate-dependent timing jitter in SNSPDs, with a framework that predicts nonmonotonic scaling under pulsed excitation.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Stochastic baseline fluctuations from finite-memory readout cause count-rate-dependent timing jitter in SNSPDs.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"9576492af219b6ba6201751f92714430572b691a3e3f74685e4a15a8766f8c1e"},"source":{"id":"2605.14316","kind":"arxiv","version":1},"verdict":{"id":"70e35c7f-8168-424f-b2eb-da95774995d8","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T02:24:36.020423Z","strongest_claim":"stochastic baseline fluctuations arising from finite-memory readout dynamics constitute an intrinsic source of the count-rate-dependent timing jitter in SNSPD systems","one_line_summary":"Stochastic baseline fluctuations from finite-memory readout dynamics form an intrinsic source of count-rate-dependent timing jitter in SNSPDs, with a framework that predicts nonmonotonic scaling under pulsed excitation.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The recovery response shape is deterministic and memory is strictly finite; any unmodeled nonlinear or history-dependent detector dynamics would invalidate the quantitative mapping from photon statistics to baseline variance.","pith_extraction_headline":"Stochastic baseline fluctuations from finite-memory readout cause count-rate-dependent timing jitter in SNSPDs."},"references":{"count":35,"sample":[{"doi":"","year":2001,"title":"Picosecond superconducting single-photon optical detector","work_id":"10e82fba-54de-432a-ab4f-53c4c301b800","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2020,"title":"Demonstration of sub- 3 ps temporal resolution with a superconducting nanowire single-photon detector","work_id":"f1164aac-ac87-4c06-839d-d16d7513d545","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2020,"title":"Efficient Single -Photon Detection with 7.7 ps Time Resolution for Photon- Correlation Measurements","work_id":"2d12bbaf-2b4b-436e-80f4-f7720cf806d4","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"NbN Superconducting Nanowire Single -Photon Detector With 90.5% Saturated System Detection Efficiency and 14.7 ps System Jitter at 1550 nm Wavelength","work_id":"88da1cf2-f1ed-483d-9c92-b073d3ebd852","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2025,"title":"High -resolution long - distance depth imaging LiDAR with ultra -low timing jitter superconducting nanowire single -photon detectors","work_id":"3cf26d72-359e-4bcd-9482-9a1d92cc13f5","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":35,"snapshot_sha256":"e28007007106b4289ae49a2bcd7dea69998084c9bbaad842e24cbb52a45f3461","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"036fb22b5cc85271015e4ad34fa51279d543e0df4fcbadca756c51ffab085510"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}