{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:COGD4PDVGICSC3N4HHYHGR2Z7A","short_pith_number":"pith:COGD4PDV","canonical_record":{"source":{"id":"2505.01516","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-02T18:05:29Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"dcfa6eb5e51d8bbdb63dc548ee8e5b559c14fc51eb025a6834352962a08c91b9","abstract_canon_sha256":"07a36144f5abc909a33632e5bebc462f54cb9533efd7ea90c78505f8ab9e71c2"},"schema_version":"1.0"},"canonical_sha256":"138c3e3c753205216dbc39f0734759f81b58a41cad25190274244e4fc8749776","source":{"kind":"arxiv","id":"2505.01516","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.01516","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"arxiv_version","alias_value":"2505.01516v1","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.01516","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"pith_short_12","alias_value":"COGD4PDVGICS","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"pith_short_16","alias_value":"COGD4PDVGICSC3N4","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"pith_short_8","alias_value":"COGD4PDV","created_at":"2026-07-05T10:57:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:COGD4PDVGICSC3N4HHYHGR2Z7A","target":"record","payload":{"canonical_record":{"source":{"id":"2505.01516","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-02T18:05:29Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"dcfa6eb5e51d8bbdb63dc548ee8e5b559c14fc51eb025a6834352962a08c91b9","abstract_canon_sha256":"07a36144f5abc909a33632e5bebc462f54cb9533efd7ea90c78505f8ab9e71c2"},"schema_version":"1.0"},"canonical_sha256":"138c3e3c753205216dbc39f0734759f81b58a41cad25190274244e4fc8749776","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:57:59.275714Z","signature_b64":"y4A0KV2eFiEEWoUpXN8UE8xj35X+WEL1LX/uLypw570DeW43BOHdKEokI63jHB6/0GfRi8UCbXqieYNZDG2DDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"138c3e3c753205216dbc39f0734759f81b58a41cad25190274244e4fc8749776","last_reissued_at":"2026-07-05T10:57:59.275196Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:57:59.275196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.01516","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:57:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WuAmc4UHHY/WBzAbJ7LegBl1R/2hNTbMIFFlS2kgbKo9oBJtuBfk1yvj5L9AviW2DhyFtGslPBvEwfSpngc9Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T14:53:02.698297Z"},"content_sha256":"c64efce7023561ca3b39ab733fb8f7513d2cc0c68b3155bb45211e0153722ee4","schema_version":"1.0","event_id":"sha256:c64efce7023561ca3b39ab733fb8f7513d2cc0c68b3155bb45211e0153722ee4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:COGD4PDVGICSC3N4HHYHGR2Z7A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards an experimental implementation of entanglement harvesting in superconducting circuits: effect of detector gap variation on entanglement harvesting","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"quant-ph","authors_text":"Adam Teixid\\'o-Bonfill, Adrian Lupascu, Eduardo Mart\\'in-Mart\\'inez, Xi Dai","submitted_at":"2025-05-02T18:05:29Z","abstract_excerpt":"Motivated by the prospect of experimental implementations of entanglement harvesting in superconducting circuits, we propose a model of variable-gap particle detector that aims to bridge some of the gaps between Unruh-DeWitt (UDW) models and realistic implementations. Using parameters tailored to potential experimental setups, we investigate entanglement harvesting in both spacelike-separated and causally connected scenarios. Our findings reveal that while variations in the energy gap reduce the ability to harvest entanglement for spacelike-separated detectors, detectors in causal contact can "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.01516","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2505.01516/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":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:57:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"klP+kHEYZT730fpeK4mmIUratDC7dM6XUzgN/AwbDbeysQ61SbTKyq0DSGN65qxAY/gkKXDXFbFyPeEwRY16DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T14:53:02.698679Z"},"content_sha256":"9738436d326cc464f2e1582756e135f23c1f09c3aa48a525efe04e564a233b58","schema_version":"1.0","event_id":"sha256:9738436d326cc464f2e1582756e135f23c1f09c3aa48a525efe04e564a233b58"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/COGD4PDVGICSC3N4HHYHGR2Z7A/bundle.json","state_url":"https://pith.science/pith/COGD4PDVGICSC3N4HHYHGR2Z7A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/COGD4PDVGICSC3N4HHYHGR2Z7A/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-10T14:53:02Z","links":{"resolver":"https://pith.science/pith/COGD4PDVGICSC3N4HHYHGR2Z7A","bundle":"https://pith.science/pith/COGD4PDVGICSC3N4HHYHGR2Z7A/bundle.json","state":"https://pith.science/pith/COGD4PDVGICSC3N4HHYHGR2Z7A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/COGD4PDVGICSC3N4HHYHGR2Z7A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:COGD4PDVGICSC3N4HHYHGR2Z7A","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"07a36144f5abc909a33632e5bebc462f54cb9533efd7ea90c78505f8ab9e71c2","cross_cats_sorted":["gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-02T18:05:29Z","title_canon_sha256":"dcfa6eb5e51d8bbdb63dc548ee8e5b559c14fc51eb025a6834352962a08c91b9"},"schema_version":"1.0","source":{"id":"2505.01516","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.01516","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"arxiv_version","alias_value":"2505.01516v1","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.01516","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"pith_short_12","alias_value":"COGD4PDVGICS","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"pith_short_16","alias_value":"COGD4PDVGICSC3N4","created_at":"2026-07-05T10:57:59Z"},{"alias_kind":"pith_short_8","alias_value":"COGD4PDV","created_at":"2026-07-05T10:57:59Z"}],"graph_snapshots":[{"event_id":"sha256:9738436d326cc464f2e1582756e135f23c1f09c3aa48a525efe04e564a233b58","target":"graph","created_at":"2026-07-05T10:57:59Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2505.01516/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Motivated by the prospect of experimental implementations of entanglement harvesting in superconducting circuits, we propose a model of variable-gap particle detector that aims to bridge some of the gaps between Unruh-DeWitt (UDW) models and realistic implementations. Using parameters tailored to potential experimental setups, we investigate entanglement harvesting in both spacelike-separated and causally connected scenarios. Our findings reveal that while variations in the energy gap reduce the ability to harvest entanglement for spacelike-separated detectors, detectors in causal contact can ","authors_text":"Adam Teixid\\'o-Bonfill, Adrian Lupascu, Eduardo Mart\\'in-Mart\\'inez, Xi Dai","cross_cats":["gr-qc","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-02T18:05:29Z","title":"Towards an experimental implementation of entanglement harvesting in superconducting circuits: effect of detector gap variation on entanglement harvesting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.01516","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:c64efce7023561ca3b39ab733fb8f7513d2cc0c68b3155bb45211e0153722ee4","target":"record","created_at":"2026-07-05T10:57:59Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"07a36144f5abc909a33632e5bebc462f54cb9533efd7ea90c78505f8ab9e71c2","cross_cats_sorted":["gr-qc","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-05-02T18:05:29Z","title_canon_sha256":"dcfa6eb5e51d8bbdb63dc548ee8e5b559c14fc51eb025a6834352962a08c91b9"},"schema_version":"1.0","source":{"id":"2505.01516","kind":"arxiv","version":1}},"canonical_sha256":"138c3e3c753205216dbc39f0734759f81b58a41cad25190274244e4fc8749776","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"138c3e3c753205216dbc39f0734759f81b58a41cad25190274244e4fc8749776","first_computed_at":"2026-07-05T10:57:59.275196Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:57:59.275196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"y4A0KV2eFiEEWoUpXN8UE8xj35X+WEL1LX/uLypw570DeW43BOHdKEokI63jHB6/0GfRi8UCbXqieYNZDG2DDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:57:59.275714Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.01516","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c64efce7023561ca3b39ab733fb8f7513d2cc0c68b3155bb45211e0153722ee4","sha256:9738436d326cc464f2e1582756e135f23c1f09c3aa48a525efe04e564a233b58"],"state_sha256":"28b9039e9853fb22e36b734a22a77e68b2a89ac7739e3037817a2220ddd5d15b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9bRnNticZ6iSyxbogV7sP59a0LOCoq5UtsA87lf8oUnPmt3MmdHNsg5XqYtgISmKNWnr5lPwByYs2uU8rSB8Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T14:53:02.700631Z","bundle_sha256":"c12b6ae167fac84a4356bed248e861a6fd684259a1889461913a1970cafce648"}}