{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:P7WJ2KGQWFUWL4V6S7K6SZZ6IT","short_pith_number":"pith:P7WJ2KGQ","canonical_record":{"source":{"id":"0907.2371","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2009-07-14T14:36:59Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f3dedb0e3fe126bad9d9098ec97b1a0675a71e73bcb65920eae4452ff1d7ebe3","abstract_canon_sha256":"62a456437a3391b921012e36456544bb5d632feaedf728c7d9f563190eceaba7"},"schema_version":"1.0"},"canonical_sha256":"7fec9d28d0b16965f2be97d5e9673e44fbe6ed44cf11c582dba55cbb9df415cc","source":{"kind":"arxiv","id":"0907.2371","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.2371","created_at":"2026-05-18T04:31:31Z"},{"alias_kind":"arxiv_version","alias_value":"0907.2371v3","created_at":"2026-05-18T04:31:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.2371","created_at":"2026-05-18T04:31:31Z"},{"alias_kind":"pith_short_12","alias_value":"P7WJ2KGQWFUW","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"P7WJ2KGQWFUWL4V6","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"P7WJ2KGQ","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:P7WJ2KGQWFUWL4V6S7K6SZZ6IT","target":"record","payload":{"canonical_record":{"source":{"id":"0907.2371","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2009-07-14T14:36:59Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f3dedb0e3fe126bad9d9098ec97b1a0675a71e73bcb65920eae4452ff1d7ebe3","abstract_canon_sha256":"62a456437a3391b921012e36456544bb5d632feaedf728c7d9f563190eceaba7"},"schema_version":"1.0"},"canonical_sha256":"7fec9d28d0b16965f2be97d5e9673e44fbe6ed44cf11c582dba55cbb9df415cc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:31.276773Z","signature_b64":"Z8bmbg0rlI4VhpMsO2G3kEmhT5IDWHFH1nQ9csaWPqRrlGSiR06vG1FI7MhyAVOhu7FNMXq0kvSpTkdkUlqxAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7fec9d28d0b16965f2be97d5e9673e44fbe6ed44cf11c582dba55cbb9df415cc","last_reissued_at":"2026-05-18T04:31:31.276199Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:31.276199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0907.2371","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:31:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o5gSyOxU4oGIoTYaJ/UZ1dOktnZF2roDpbgONYLnToES1ZfP+a0JTikTQbmdnjdcrZvFa0HaaZbf7u4U3P4jBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T18:26:52.381668Z"},"content_sha256":"6a92d29652e04e640bbf0e1509b137e85078f6e963f1b752d993e1ecd92bb17b","schema_version":"1.0","event_id":"sha256:6a92d29652e04e640bbf0e1509b137e85078f6e963f1b752d993e1ecd92bb17b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:P7WJ2KGQWFUWL4V6S7K6SZZ6IT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Persistent currents and quantised vortices in a polariton superfluid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.other","authors_text":"A. Lemaitre, C. Tejedor, D.N. Krizhanovskii, D. Sanvitto, F.M. Marchetti, F.P. Laussy, G. Tosi, J. Bloch, L. Marrucci, L. Vina, M. Baudisch, M.H. Szymanska, M.S. Skolnick","submitted_at":"2009-07-14T14:36:59Z","abstract_excerpt":"Semiconductor microcavity polaritons in the optical parametric scattering regime have been recently demonstrated to display a new variety of dissipationless superfluid behaviour. We report the first observation in resonantly pumped exciton polaritons of a metastable persistent superflow carrying quantum of angular momentum, m. The quantised vortex, excited by a weak 2 ps pulsed probe, is shown to last for at least 80 ps, limited only by the leaking outside the cavity. The polariton circulating superfluid persists in the absence of the driving rotating probe with no apparent dissipation. In add"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.2371","kind":"arxiv","version":3},"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":"2026-05-18T04:31:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BG9KPPEsvdWO0n7nhQZFTtoPlJ6Bs+EyHxYO1wIM+9kEWJZzp3lVHSdQ2O0bbeL6BztcHWZBN/13ucWzEMqjBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T18:26:52.382418Z"},"content_sha256":"aa72eb768e9920cf1d4733b649bd17cbb44023519ba8d80bd4a2e17fe7648d41","schema_version":"1.0","event_id":"sha256:aa72eb768e9920cf1d4733b649bd17cbb44023519ba8d80bd4a2e17fe7648d41"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P7WJ2KGQWFUWL4V6S7K6SZZ6IT/bundle.json","state_url":"https://pith.science/pith/P7WJ2KGQWFUWL4V6S7K6SZZ6IT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P7WJ2KGQWFUWL4V6S7K6SZZ6IT/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":"2026-05-29T18:26:52Z","links":{"resolver":"https://pith.science/pith/P7WJ2KGQWFUWL4V6S7K6SZZ6IT","bundle":"https://pith.science/pith/P7WJ2KGQWFUWL4V6S7K6SZZ6IT/bundle.json","state":"https://pith.science/pith/P7WJ2KGQWFUWL4V6S7K6SZZ6IT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P7WJ2KGQWFUWL4V6S7K6SZZ6IT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:P7WJ2KGQWFUWL4V6S7K6SZZ6IT","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":"62a456437a3391b921012e36456544bb5d632feaedf728c7d9f563190eceaba7","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2009-07-14T14:36:59Z","title_canon_sha256":"f3dedb0e3fe126bad9d9098ec97b1a0675a71e73bcb65920eae4452ff1d7ebe3"},"schema_version":"1.0","source":{"id":"0907.2371","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.2371","created_at":"2026-05-18T04:31:31Z"},{"alias_kind":"arxiv_version","alias_value":"0907.2371v3","created_at":"2026-05-18T04:31:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.2371","created_at":"2026-05-18T04:31:31Z"},{"alias_kind":"pith_short_12","alias_value":"P7WJ2KGQWFUW","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"P7WJ2KGQWFUWL4V6","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"P7WJ2KGQ","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:aa72eb768e9920cf1d4733b649bd17cbb44023519ba8d80bd4a2e17fe7648d41","target":"graph","created_at":"2026-05-18T04:31:31Z","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":"Semiconductor microcavity polaritons in the optical parametric scattering regime have been recently demonstrated to display a new variety of dissipationless superfluid behaviour. We report the first observation in resonantly pumped exciton polaritons of a metastable persistent superflow carrying quantum of angular momentum, m. The quantised vortex, excited by a weak 2 ps pulsed probe, is shown to last for at least 80 ps, limited only by the leaking outside the cavity. The polariton circulating superfluid persists in the absence of the driving rotating probe with no apparent dissipation. In add","authors_text":"A. Lemaitre, C. Tejedor, D.N. Krizhanovskii, D. Sanvitto, F.M. Marchetti, F.P. Laussy, G. Tosi, J. Bloch, L. Marrucci, L. Vina, M. Baudisch, M.H. Szymanska, M.S. Skolnick","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2009-07-14T14:36:59Z","title":"Persistent currents and quantised vortices in a polariton superfluid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.2371","kind":"arxiv","version":3},"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":"sha256:6a92d29652e04e640bbf0e1509b137e85078f6e963f1b752d993e1ecd92bb17b","target":"record","created_at":"2026-05-18T04:31:31Z","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":"62a456437a3391b921012e36456544bb5d632feaedf728c7d9f563190eceaba7","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2009-07-14T14:36:59Z","title_canon_sha256":"f3dedb0e3fe126bad9d9098ec97b1a0675a71e73bcb65920eae4452ff1d7ebe3"},"schema_version":"1.0","source":{"id":"0907.2371","kind":"arxiv","version":3}},"canonical_sha256":"7fec9d28d0b16965f2be97d5e9673e44fbe6ed44cf11c582dba55cbb9df415cc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7fec9d28d0b16965f2be97d5e9673e44fbe6ed44cf11c582dba55cbb9df415cc","first_computed_at":"2026-05-18T04:31:31.276199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:31.276199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z8bmbg0rlI4VhpMsO2G3kEmhT5IDWHFH1nQ9csaWPqRrlGSiR06vG1FI7MhyAVOhu7FNMXq0kvSpTkdkUlqxAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:31.276773Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.2371","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6a92d29652e04e640bbf0e1509b137e85078f6e963f1b752d993e1ecd92bb17b","sha256:aa72eb768e9920cf1d4733b649bd17cbb44023519ba8d80bd4a2e17fe7648d41"],"state_sha256":"acaee98f1fa9648b9ba1459164b8e7d110450ba50682401fe770d7d9164fa0c8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+YYTPlEJpNrAEndjZNnb0dTAPwhYXYx65v5dlovIpDVHtCtr85vQKbc20LpCbQ5GdmcHNnPtHerobDOlTgHrBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T18:26:52.387962Z","bundle_sha256":"6a004de7b42ba692a31b4bf5f82511c0abb42a7b7c0968bab7f93c93f40c8e8d"}}