{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ESBN7UMYXR4QNG7P5JZHIVYNJM","short_pith_number":"pith:ESBN7UMY","canonical_record":{"source":{"id":"1503.03146","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-11T02:01:59Z","cross_cats_sorted":[],"title_canon_sha256":"88dfc39657accacdc016fea4e473c4059e1adbe6747b63239d5378719033c581","abstract_canon_sha256":"ddce410211bc5f5f4595bfb6a6eee01a9c13477c6a111325deef739efa6c9e09"},"schema_version":"1.0"},"canonical_sha256":"2482dfd198bc79069befea7274570d4b3024c4624221e7241de910f29eee7225","source":{"kind":"arxiv","id":"1503.03146","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03146","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03146v1","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03146","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"ESBN7UMYXR4Q","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"ESBN7UMYXR4QNG7P","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"ESBN7UMY","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ESBN7UMYXR4QNG7P5JZHIVYNJM","target":"record","payload":{"canonical_record":{"source":{"id":"1503.03146","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-11T02:01:59Z","cross_cats_sorted":[],"title_canon_sha256":"88dfc39657accacdc016fea4e473c4059e1adbe6747b63239d5378719033c581","abstract_canon_sha256":"ddce410211bc5f5f4595bfb6a6eee01a9c13477c6a111325deef739efa6c9e09"},"schema_version":"1.0"},"canonical_sha256":"2482dfd198bc79069befea7274570d4b3024c4624221e7241de910f29eee7225","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:04.213718Z","signature_b64":"M9iPWkeb2TXCkBbEfH3NvjjGYHL93/I8aSh6FMguzeRhVUoH3LKqy0nZcbg8IbZKM45UQ+YEmkfR7AvkNRWiCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2482dfd198bc79069befea7274570d4b3024c4624221e7241de910f29eee7225","last_reissued_at":"2026-05-18T02:25:04.213234Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:04.213234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.03146","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":"2026-05-18T02:25:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BFH0TiPFG/G0jugnh3XNFnSQeJNXP/IFkdyGJfCxOCamuWFWRbs1Wx71HhBMwrl/xRQMSA7efrLjVB7ab3SWBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T14:52:53.227015Z"},"content_sha256":"f91e148e1b98d0cc89a73554413d39b4d5cfb2eef6fbaa21086feb02263de40b","schema_version":"1.0","event_id":"sha256:f91e148e1b98d0cc89a73554413d39b4d5cfb2eef6fbaa21086feb02263de40b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ESBN7UMYXR4QNG7P5JZHIVYNJM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase diagram of a QED-cavity array coupled via a N-type level scheme","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Davide Rossini, Jiasen Jin, Rosario Fazio","submitted_at":"2015-03-11T02:01:59Z","abstract_excerpt":"We study the zero-temperature phase diagram of a one-dimensional array of QED cavities where, besides the single-photon hopping, an additional coupling between neighboring cavities is mediated by an N-type four-level system. By varying the relative strength of the various couplings, the array is shown to exhibit a variety of quantum phases including a polaritonic Mott insulator, a density-wave and a superfluid phase. Our results have been obtained by means of numerical density-matrix renormalization group calculations. The phase diagram was obtained by analyzing the energy gaps for the polarit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03146","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":""},"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":"2026-05-18T02:25:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1P6d+P9+YWQXAzQzOjf5rWn6oEwz2XnLxymqzQjQp+ccrLBgp6Ex3ZRdnKYUTEWO9MA9xmin2k5z+/FKIAxDCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T14:52:53.227715Z"},"content_sha256":"e2117a85b11a41af2e64ddd719bae8cf79a5145d64c21cebe058f4cfb51c2237","schema_version":"1.0","event_id":"sha256:e2117a85b11a41af2e64ddd719bae8cf79a5145d64c21cebe058f4cfb51c2237"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ESBN7UMYXR4QNG7P5JZHIVYNJM/bundle.json","state_url":"https://pith.science/pith/ESBN7UMYXR4QNG7P5JZHIVYNJM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ESBN7UMYXR4QNG7P5JZHIVYNJM/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":"2026-05-31T14:52:53Z","links":{"resolver":"https://pith.science/pith/ESBN7UMYXR4QNG7P5JZHIVYNJM","bundle":"https://pith.science/pith/ESBN7UMYXR4QNG7P5JZHIVYNJM/bundle.json","state":"https://pith.science/pith/ESBN7UMYXR4QNG7P5JZHIVYNJM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ESBN7UMYXR4QNG7P5JZHIVYNJM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ESBN7UMYXR4QNG7P5JZHIVYNJM","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":"ddce410211bc5f5f4595bfb6a6eee01a9c13477c6a111325deef739efa6c9e09","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-11T02:01:59Z","title_canon_sha256":"88dfc39657accacdc016fea4e473c4059e1adbe6747b63239d5378719033c581"},"schema_version":"1.0","source":{"id":"1503.03146","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03146","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03146v1","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03146","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"ESBN7UMYXR4Q","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"ESBN7UMYXR4QNG7P","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"ESBN7UMY","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:e2117a85b11a41af2e64ddd719bae8cf79a5145d64c21cebe058f4cfb51c2237","target":"graph","created_at":"2026-05-18T02:25:04Z","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"},"paper":{"abstract_excerpt":"We study the zero-temperature phase diagram of a one-dimensional array of QED cavities where, besides the single-photon hopping, an additional coupling between neighboring cavities is mediated by an N-type four-level system. By varying the relative strength of the various couplings, the array is shown to exhibit a variety of quantum phases including a polaritonic Mott insulator, a density-wave and a superfluid phase. Our results have been obtained by means of numerical density-matrix renormalization group calculations. The phase diagram was obtained by analyzing the energy gaps for the polarit","authors_text":"Davide Rossini, Jiasen Jin, Rosario Fazio","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-11T02:01:59Z","title":"Phase diagram of a QED-cavity array coupled via a N-type level scheme"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03146","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:f91e148e1b98d0cc89a73554413d39b4d5cfb2eef6fbaa21086feb02263de40b","target":"record","created_at":"2026-05-18T02:25:04Z","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":"ddce410211bc5f5f4595bfb6a6eee01a9c13477c6a111325deef739efa6c9e09","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-11T02:01:59Z","title_canon_sha256":"88dfc39657accacdc016fea4e473c4059e1adbe6747b63239d5378719033c581"},"schema_version":"1.0","source":{"id":"1503.03146","kind":"arxiv","version":1}},"canonical_sha256":"2482dfd198bc79069befea7274570d4b3024c4624221e7241de910f29eee7225","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2482dfd198bc79069befea7274570d4b3024c4624221e7241de910f29eee7225","first_computed_at":"2026-05-18T02:25:04.213234Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:04.213234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M9iPWkeb2TXCkBbEfH3NvjjGYHL93/I8aSh6FMguzeRhVUoH3LKqy0nZcbg8IbZKM45UQ+YEmkfR7AvkNRWiCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:04.213718Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.03146","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f91e148e1b98d0cc89a73554413d39b4d5cfb2eef6fbaa21086feb02263de40b","sha256:e2117a85b11a41af2e64ddd719bae8cf79a5145d64c21cebe058f4cfb51c2237"],"state_sha256":"7777b3ef12006cdea08fc36fe9ac8516bf746a99de41fc268ec19a5d1d4ad5ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PJ3e3YvHqz1ThJRDLFEy1EEcToh+yR48i1yaaFIW7fGVIu8wh9xWDTOAMbO8n2M+cD0XaNlZvUICI9v5xW2zBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T14:52:53.232166Z","bundle_sha256":"7bd3e40f48a6d1132f4822c37e085c3a5c4d9cc7e00a1e231680d7da113d052c"}}