{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:HPQHOGR6XRSMPLAP6Y6XIUCOF3","short_pith_number":"pith:HPQHOGR6","canonical_record":{"source":{"id":"2403.13717","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-20T16:22:54Z","cross_cats_sorted":[],"title_canon_sha256":"d1a9fce9fe7021b56148c35341bc354b797d121eda69a32d265b526c287117f9","abstract_canon_sha256":"ada9726ae8c33760579b50e8e015c1608315f327ff7c0271215fd3aee7b5ea8a"},"schema_version":"1.0"},"canonical_sha256":"3be0771a3ebc64c7ac0ff63d74504e2ec32ecbb0dbb99ab8e6b4a415086b8cda","source":{"kind":"arxiv","id":"2403.13717","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.13717","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"arxiv_version","alias_value":"2403.13717v4","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.13717","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"pith_short_12","alias_value":"HPQHOGR6XRSM","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"pith_short_16","alias_value":"HPQHOGR6XRSMPLAP","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"pith_short_8","alias_value":"HPQHOGR6","created_at":"2026-06-03T01:05:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:HPQHOGR6XRSMPLAP6Y6XIUCOF3","target":"record","payload":{"canonical_record":{"source":{"id":"2403.13717","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-20T16:22:54Z","cross_cats_sorted":[],"title_canon_sha256":"d1a9fce9fe7021b56148c35341bc354b797d121eda69a32d265b526c287117f9","abstract_canon_sha256":"ada9726ae8c33760579b50e8e015c1608315f327ff7c0271215fd3aee7b5ea8a"},"schema_version":"1.0"},"canonical_sha256":"3be0771a3ebc64c7ac0ff63d74504e2ec32ecbb0dbb99ab8e6b4a415086b8cda","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T01:05:03.271462Z","signature_b64":"MzUdGnUVVbw6SGgyMB9AuhpH2pSttvaFc62L2zeOHnSLuSWdKOOk/oqZs6w7dxNGMYBK1Q1df9X61ket1867AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3be0771a3ebc64c7ac0ff63d74504e2ec32ecbb0dbb99ab8e6b4a415086b8cda","last_reissued_at":"2026-06-03T01:05:03.270963Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T01:05:03.270963Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2403.13717","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-03T01:05:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4tsBPHFT73yWklYx4/mX6hw2xUL8HGRdh8TJjayUQ+1htB8jbdXlSTJGMZJ9B71eTO2WYF5hZ63y1pLw4eSwDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T21:57:14.129008Z"},"content_sha256":"d7fd5f0505c4e5ddab7989e0f6b862ee69f87ed4e9e0fa2411a8920a22c2e989","schema_version":"1.0","event_id":"sha256:d7fd5f0505c4e5ddab7989e0f6b862ee69f87ed4e9e0fa2411a8920a22c2e989"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:HPQHOGR6XRSMPLAP6Y6XIUCOF3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hyperradiance, photon blockade and concurrence in a pair of qubits inside a driven cavity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Anushree Dey, Bimalendu Deb","submitted_at":"2024-03-20T16:22:54Z","abstract_excerpt":"We theoretically study the radiance properties of a pair of qubits inside a single-mode cavity driven by a two-photon drive. Our results show that, when the two qubits are strongly coupled to the cavity field, the collective radiation emitted from the qubits exhibits hyperradiance which can be detected as a signature of two qubit entanglement in the weak-driving regime. We quantify the entanglement in terms of concurrence. Additionally, we study the radiance behaviour in the presence of an intracavity Kerr-nonlinear medium that leads to two-photon blockade. Our results suggest that this system"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.13717","kind":"arxiv","version":4},"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/2403.13717/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":"2026-06-03T01:05:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l4Rj3Hw0VEFTmC3LCcKJi/n2TykxgwszIvVlnymWmxXQdi6FNzY0uAC45KmOnGryg5KaGj1edpht1z7dSlo1Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T21:57:14.129402Z"},"content_sha256":"d1057da0f8b846b7826c7232a3356c45d0d53eb200fdce7a3c729897cd8b039e","schema_version":"1.0","event_id":"sha256:d1057da0f8b846b7826c7232a3356c45d0d53eb200fdce7a3c729897cd8b039e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HPQHOGR6XRSMPLAP6Y6XIUCOF3/bundle.json","state_url":"https://pith.science/pith/HPQHOGR6XRSMPLAP6Y6XIUCOF3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HPQHOGR6XRSMPLAP6Y6XIUCOF3/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":"2026-06-10T21:57:14Z","links":{"resolver":"https://pith.science/pith/HPQHOGR6XRSMPLAP6Y6XIUCOF3","bundle":"https://pith.science/pith/HPQHOGR6XRSMPLAP6Y6XIUCOF3/bundle.json","state":"https://pith.science/pith/HPQHOGR6XRSMPLAP6Y6XIUCOF3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HPQHOGR6XRSMPLAP6Y6XIUCOF3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:HPQHOGR6XRSMPLAP6Y6XIUCOF3","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":"ada9726ae8c33760579b50e8e015c1608315f327ff7c0271215fd3aee7b5ea8a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-20T16:22:54Z","title_canon_sha256":"d1a9fce9fe7021b56148c35341bc354b797d121eda69a32d265b526c287117f9"},"schema_version":"1.0","source":{"id":"2403.13717","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.13717","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"arxiv_version","alias_value":"2403.13717v4","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.13717","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"pith_short_12","alias_value":"HPQHOGR6XRSM","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"pith_short_16","alias_value":"HPQHOGR6XRSMPLAP","created_at":"2026-06-03T01:05:03Z"},{"alias_kind":"pith_short_8","alias_value":"HPQHOGR6","created_at":"2026-06-03T01:05:03Z"}],"graph_snapshots":[{"event_id":"sha256:d1057da0f8b846b7826c7232a3356c45d0d53eb200fdce7a3c729897cd8b039e","target":"graph","created_at":"2026-06-03T01:05:03Z","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/2403.13717/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We theoretically study the radiance properties of a pair of qubits inside a single-mode cavity driven by a two-photon drive. Our results show that, when the two qubits are strongly coupled to the cavity field, the collective radiation emitted from the qubits exhibits hyperradiance which can be detected as a signature of two qubit entanglement in the weak-driving regime. We quantify the entanglement in terms of concurrence. Additionally, we study the radiance behaviour in the presence of an intracavity Kerr-nonlinear medium that leads to two-photon blockade. Our results suggest that this system","authors_text":"Anushree Dey, Bimalendu Deb","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-20T16:22:54Z","title":"Hyperradiance, photon blockade and concurrence in a pair of qubits inside a driven cavity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.13717","kind":"arxiv","version":4},"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:d7fd5f0505c4e5ddab7989e0f6b862ee69f87ed4e9e0fa2411a8920a22c2e989","target":"record","created_at":"2026-06-03T01:05:03Z","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":"ada9726ae8c33760579b50e8e015c1608315f327ff7c0271215fd3aee7b5ea8a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-20T16:22:54Z","title_canon_sha256":"d1a9fce9fe7021b56148c35341bc354b797d121eda69a32d265b526c287117f9"},"schema_version":"1.0","source":{"id":"2403.13717","kind":"arxiv","version":4}},"canonical_sha256":"3be0771a3ebc64c7ac0ff63d74504e2ec32ecbb0dbb99ab8e6b4a415086b8cda","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3be0771a3ebc64c7ac0ff63d74504e2ec32ecbb0dbb99ab8e6b4a415086b8cda","first_computed_at":"2026-06-03T01:05:03.270963Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T01:05:03.270963Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MzUdGnUVVbw6SGgyMB9AuhpH2pSttvaFc62L2zeOHnSLuSWdKOOk/oqZs6w7dxNGMYBK1Q1df9X61ket1867AQ==","signature_status":"signed_v1","signed_at":"2026-06-03T01:05:03.271462Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.13717","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d7fd5f0505c4e5ddab7989e0f6b862ee69f87ed4e9e0fa2411a8920a22c2e989","sha256:d1057da0f8b846b7826c7232a3356c45d0d53eb200fdce7a3c729897cd8b039e"],"state_sha256":"34c5ed7cb89aeb67374fd3bab2b067866952cf1d6b356484087dc781053fee3f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1NNKUb8Hn50iZMJV/q2dadJrxWidmBUFZ2EMfEGq9bg0ZkZMwic6FEjE2FEZ0ECT6u10O2hqueaTDaCF0qo9AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T21:57:14.131649Z","bundle_sha256":"0d8a54ce3d3ab33df4c45efc3936ea3bf2e8e09ca43fbf3e094e5b0f2d809517"}}