{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:7M5GZGAP2R7ULVCYC4ELGUJP2B","short_pith_number":"pith:7M5GZGAP","schema_version":"1.0","canonical_sha256":"fb3a6c980fd47f45d4581708b3512fd043b95536b872da609eccb3a4156c64b7","source":{"kind":"arxiv","id":"2604.05783","version":2},"attestation_state":"computed","paper":{"title":"Nonlinear atomic tunnelling boosted by bright squeezed vacuum","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"Bright squeezed vacuum light produces the same tunneling ionization in a sodium atom as a coherent source using over twenty times less energy.","cross_cats":["physics.atom-ph","physics.optics"],"primary_cat":"quant-ph","authors_text":"Chenhao Zhao, Dian Wu, Hongcheng Ni, Jianqi Chen, Jianshi Lu, Jian Wu, Lulu Han, Mingyu Zhu, Ru Zhang, Shengzhe Pan, Shicheng Jiang, Suwen Xiong, Wenxue Li, Yiwen Wang, Zhejun Jiang","submitted_at":"2026-04-07T12:20:49Z","abstract_excerpt":"Nonlinear optical processes, mediated by multiphoton interactions rather than single-photon response, are routinely exploited to enable a range of light-based functionalities in devices and applications. Nonlinear effects are enhanced through higher intensity fields, which is a limiting strategy owing to potential radiation damage. An alternative strategy relies on the fluctuation redistribution typical of quantum light, but experimental demonstrations at the most fundamental level have been limited. Here we report experimental nonlinear tunnelling ionization of isolated atoms, a pivotal nonli"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":true},"canonical_record":{"source":{"id":"2604.05783","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"quant-ph","submitted_at":"2026-04-07T12:20:49Z","cross_cats_sorted":["physics.atom-ph","physics.optics"],"title_canon_sha256":"6489433442a6fa3847976100050eb562471db8b93e2e151725e1cb8de071d3d0","abstract_canon_sha256":"26202101f1215cc50f23aeb4b25410b94ddf0d37a91c0a1606beaa1fd8557d58"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-21T02:05:02.404289Z","signature_b64":"AxiKcbbmPWsQPQ0N1mSRHZcNpQ5GlBg3Ebd8UUK/BIbvndIhuZJEmqTT+6r5DM5zcB/UPFxGtevkIkRtavvcDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb3a6c980fd47f45d4581708b3512fd043b95536b872da609eccb3a4156c64b7","last_reissued_at":"2026-05-21T02:05:02.403398Z","signature_status":"signed_v1","first_computed_at":"2026-05-21T02:05:02.403398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Nonlinear atomic tunnelling boosted by bright squeezed vacuum","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"Bright squeezed vacuum light produces the same tunneling ionization in a sodium atom as a coherent source using over twenty times less energy.","cross_cats":["physics.atom-ph","physics.optics"],"primary_cat":"quant-ph","authors_text":"Chenhao Zhao, Dian Wu, Hongcheng Ni, Jianqi Chen, Jianshi Lu, Jian Wu, Lulu Han, Mingyu Zhu, Ru Zhang, Shengzhe Pan, Shicheng Jiang, Suwen Xiong, Wenxue Li, Yiwen Wang, Zhejun Jiang","submitted_at":"2026-04-07T12:20:49Z","abstract_excerpt":"Nonlinear optical processes, mediated by multiphoton interactions rather than single-photon response, are routinely exploited to enable a range of light-based functionalities in devices and applications. Nonlinear effects are enhanced through higher intensity fields, which is a limiting strategy owing to potential radiation damage. An alternative strategy relies on the fluctuation redistribution typical of quantum light, but experimental demonstrations at the most fundamental level have been limited. Here we report experimental nonlinear tunnelling ionization of isolated atoms, a pivotal nonli"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"the tunneling ionization of a single sodium atom induced by a 300 nJ BSV beam matches that achieved with a 7.1 μJ coherent light source, demonstrating a dramatic boost in nonlinear efficiency from phase-squeezed quantum light","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That differences in ionization yield arise purely from the phase squeezing of the BSV rather than from unaccounted variations in spatial mode, temporal profile, or detection efficiency between the quantum and coherent light setups.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Bright squeezed vacuum boosts single-atom tunneling ionization to match coherent light using about 24 times less pulse energy, with control via phase squeezing degree.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Bright squeezed vacuum light produces the same tunneling ionization in a sodium atom as a coherent source using over twenty times less energy.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"f77122bfd39b2dfd868d394ee03d2a3ce8a54dac1d4ec0e2c0d5c9cb9cea09ad"},"source":{"id":"2604.05783","kind":"arxiv","version":2},"verdict":{"id":"b4c23a85-50e8-4ec9-9570-61fc06af49cb","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T18:46:44.050155Z","strongest_claim":"the tunneling ionization of a single sodium atom induced by a 300 nJ BSV beam matches that achieved with a 7.1 μJ coherent light source, demonstrating a dramatic boost in nonlinear efficiency from phase-squeezed quantum light","one_line_summary":"Bright squeezed vacuum boosts single-atom tunneling ionization to match coherent light using about 24 times less pulse energy, with control via phase squeezing degree.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That differences in ionization yield arise purely from the phase squeezing of the BSV rather than from unaccounted variations in spatial mode, temporal profile, or detection efficiency between the quantum and coherent light setups.","pith_extraction_headline":"Bright squeezed vacuum light produces the same tunneling ionization in a sodium atom as a coherent source using over twenty times less energy."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.05783/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"7c1eaf7476407b6bbc4086ef85dc102c1bd0cf32601136e6fe119d99a8fd2632"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2604.05783","created_at":"2026-05-21T02:05:02.403517+00:00"},{"alias_kind":"arxiv_version","alias_value":"2604.05783v2","created_at":"2026-05-21T02:05:02.403517+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.05783","created_at":"2026-05-21T02:05:02.403517+00:00"},{"alias_kind":"pith_short_12","alias_value":"7M5GZGAP2R7U","created_at":"2026-05-21T02:05:02.403517+00:00"},{"alias_kind":"pith_short_16","alias_value":"7M5GZGAP2R7ULVCY","created_at":"2026-05-21T02:05:02.403517+00:00"},{"alias_kind":"pith_short_8","alias_value":"7M5GZGAP","created_at":"2026-05-21T02:05:02.403517+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":2,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B","json":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B.json","graph_json":"https://pith.science/api/pith-number/7M5GZGAP2R7ULVCYC4ELGUJP2B/graph.json","events_json":"https://pith.science/api/pith-number/7M5GZGAP2R7ULVCYC4ELGUJP2B/events.json","paper":"https://pith.science/paper/7M5GZGAP"},"agent_actions":{"view_html":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B","download_json":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B.json","view_paper":"https://pith.science/paper/7M5GZGAP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2604.05783&json=true","fetch_graph":"https://pith.science/api/pith-number/7M5GZGAP2R7ULVCYC4ELGUJP2B/graph.json","fetch_events":"https://pith.science/api/pith-number/7M5GZGAP2R7ULVCYC4ELGUJP2B/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B/action/storage_attestation","attest_author":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B/action/author_attestation","sign_citation":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B/action/citation_signature","submit_replication":"https://pith.science/pith/7M5GZGAP2R7ULVCYC4ELGUJP2B/action/replication_record"}},"created_at":"2026-05-21T02:05:02.403517+00:00","updated_at":"2026-05-21T02:05:02.403517+00:00"}