{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:5SAS766ZTNVLINQAF75GR7DSEL","short_pith_number":"pith:5SAS766Z","canonical_record":{"source":{"id":"1602.06644","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-22T04:40:19Z","cross_cats_sorted":["nucl-ex","physics.optics"],"title_canon_sha256":"b9d624b64b0da6e23abab874019b170b14910dd9bfb093a1337c4f5704249519","abstract_canon_sha256":"d847d3ce37b8d577d1edb06b96b5e9d9d8af9c98ae0289f8d4012eeafce377fa"},"schema_version":"1.0"},"canonical_sha256":"ec812ffbd99b6ab436002ffa68fc7222dee2ec7fac4b739adf4ed3fb4c12c3cd","source":{"kind":"arxiv","id":"1602.06644","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.06644","created_at":"2026-05-18T01:02:04Z"},{"alias_kind":"arxiv_version","alias_value":"1602.06644v2","created_at":"2026-05-18T01:02:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.06644","created_at":"2026-05-18T01:02:04Z"},{"alias_kind":"pith_short_12","alias_value":"5SAS766ZTNVL","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5SAS766ZTNVLINQA","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5SAS766Z","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:5SAS766ZTNVLINQAF75GR7DSEL","target":"record","payload":{"canonical_record":{"source":{"id":"1602.06644","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-22T04:40:19Z","cross_cats_sorted":["nucl-ex","physics.optics"],"title_canon_sha256":"b9d624b64b0da6e23abab874019b170b14910dd9bfb093a1337c4f5704249519","abstract_canon_sha256":"d847d3ce37b8d577d1edb06b96b5e9d9d8af9c98ae0289f8d4012eeafce377fa"},"schema_version":"1.0"},"canonical_sha256":"ec812ffbd99b6ab436002ffa68fc7222dee2ec7fac4b739adf4ed3fb4c12c3cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:02:04.482769Z","signature_b64":"kWn93nxKVWa3SIpSjHLYWkRSKFTJuOA5/QIrISOZ6S+LWJK9YOTzlZXa8d11oVBAvBQSzrSx+mZd+E7vzYR5Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec812ffbd99b6ab436002ffa68fc7222dee2ec7fac4b739adf4ed3fb4c12c3cd","last_reissued_at":"2026-05-18T01:02:04.482187Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:02:04.482187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.06644","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:02:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hqe3WQlrfIhqcJrgLlDc2wN0kfPazWzKCFrB6r+aXn5pl5yNNusxG0x2192SoxRPYiGkWhAWLpSyK7zaXv1zDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T08:51:25.394858Z"},"content_sha256":"a2e1be82ed7233fa1eaba573eccf1b5f6fb1723d47cb4b46396272816fed6668","schema_version":"1.0","event_id":"sha256:a2e1be82ed7233fa1eaba573eccf1b5f6fb1723d47cb4b46396272816fed6668"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:5SAS766ZTNVLINQAF75GR7DSEL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin-Orbit States of Neutron Wavepackets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex","physics.optics"],"primary_cat":"quant-ph","authors_text":"Charles W. Clark, Christopher J. Wood, David G. Cory, Dmitry A. Pushin, Dusan Sarenac, Joachim Nsofini, Michael G. Huber, Muhammad Arif","submitted_at":"2016-02-22T04:40:19Z","abstract_excerpt":"We propose a method to prepare an entangled spin-orbit state between the spin and the orbital angular momenta of a neutron wavepacket. This spin-orbit state is created by passing neutrons through the center of a quadrupole magnetic field, which provides a coupling between the spin and orbital degrees of freedom. A Ramsey fringe type measurement is suggested as a means of verifying the spin-orbit correlations."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.06644","kind":"arxiv","version":2},"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":"2026-05-18T01:02:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fW2qWR9MCExQk5Iv903ALuV9KvYYnqcZjtujoesITKDvCVdn13rfCkuZV0KlS6XBkkjGCBbvRiNGGSOG/taGDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T08:51:25.395623Z"},"content_sha256":"067744de894d7a7f5a7dc73c4f8117b5f3324de87da684018552f1dad5c1e561","schema_version":"1.0","event_id":"sha256:067744de894d7a7f5a7dc73c4f8117b5f3324de87da684018552f1dad5c1e561"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5SAS766ZTNVLINQAF75GR7DSEL/bundle.json","state_url":"https://pith.science/pith/5SAS766ZTNVLINQAF75GR7DSEL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5SAS766ZTNVLINQAF75GR7DSEL/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":"2026-05-23T08:51:25Z","links":{"resolver":"https://pith.science/pith/5SAS766ZTNVLINQAF75GR7DSEL","bundle":"https://pith.science/pith/5SAS766ZTNVLINQAF75GR7DSEL/bundle.json","state":"https://pith.science/pith/5SAS766ZTNVLINQAF75GR7DSEL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5SAS766ZTNVLINQAF75GR7DSEL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:5SAS766ZTNVLINQAF75GR7DSEL","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":"d847d3ce37b8d577d1edb06b96b5e9d9d8af9c98ae0289f8d4012eeafce377fa","cross_cats_sorted":["nucl-ex","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-22T04:40:19Z","title_canon_sha256":"b9d624b64b0da6e23abab874019b170b14910dd9bfb093a1337c4f5704249519"},"schema_version":"1.0","source":{"id":"1602.06644","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.06644","created_at":"2026-05-18T01:02:04Z"},{"alias_kind":"arxiv_version","alias_value":"1602.06644v2","created_at":"2026-05-18T01:02:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.06644","created_at":"2026-05-18T01:02:04Z"},{"alias_kind":"pith_short_12","alias_value":"5SAS766ZTNVL","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5SAS766ZTNVLINQA","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5SAS766Z","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:067744de894d7a7f5a7dc73c4f8117b5f3324de87da684018552f1dad5c1e561","target":"graph","created_at":"2026-05-18T01:02:04Z","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 propose a method to prepare an entangled spin-orbit state between the spin and the orbital angular momenta of a neutron wavepacket. This spin-orbit state is created by passing neutrons through the center of a quadrupole magnetic field, which provides a coupling between the spin and orbital degrees of freedom. A Ramsey fringe type measurement is suggested as a means of verifying the spin-orbit correlations.","authors_text":"Charles W. Clark, Christopher J. Wood, David G. Cory, Dmitry A. Pushin, Dusan Sarenac, Joachim Nsofini, Michael G. Huber, Muhammad Arif","cross_cats":["nucl-ex","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-22T04:40:19Z","title":"Spin-Orbit States of Neutron Wavepackets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.06644","kind":"arxiv","version":2},"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:a2e1be82ed7233fa1eaba573eccf1b5f6fb1723d47cb4b46396272816fed6668","target":"record","created_at":"2026-05-18T01:02:04Z","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":"d847d3ce37b8d577d1edb06b96b5e9d9d8af9c98ae0289f8d4012eeafce377fa","cross_cats_sorted":["nucl-ex","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-22T04:40:19Z","title_canon_sha256":"b9d624b64b0da6e23abab874019b170b14910dd9bfb093a1337c4f5704249519"},"schema_version":"1.0","source":{"id":"1602.06644","kind":"arxiv","version":2}},"canonical_sha256":"ec812ffbd99b6ab436002ffa68fc7222dee2ec7fac4b739adf4ed3fb4c12c3cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec812ffbd99b6ab436002ffa68fc7222dee2ec7fac4b739adf4ed3fb4c12c3cd","first_computed_at":"2026-05-18T01:02:04.482187Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:04.482187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kWn93nxKVWa3SIpSjHLYWkRSKFTJuOA5/QIrISOZ6S+LWJK9YOTzlZXa8d11oVBAvBQSzrSx+mZd+E7vzYR5Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:04.482769Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.06644","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a2e1be82ed7233fa1eaba573eccf1b5f6fb1723d47cb4b46396272816fed6668","sha256:067744de894d7a7f5a7dc73c4f8117b5f3324de87da684018552f1dad5c1e561"],"state_sha256":"a9b5f39fbf01c858ce48f8ce6a382a720148aa0d475de56fd929ee4ba4fcb43b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bYljYCxHdn1lSER6e9xkLJ04VZ2TbjmVmM/HQCsYlHet+pEz4MF0bZLq5EVVtyNhhg4W7bGyTqJ8GgZV+OFNBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T08:51:25.399371Z","bundle_sha256":"156779a889ecd97133fb3797e11c536809aeb89dc1dbd1c74592aecf0129a6be"}}