{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:2N7PXLJBJ3C4EZG77XVDKIERPC","short_pith_number":"pith:2N7PXLJB","canonical_record":{"source":{"id":"1211.0404","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-11-02T10:04:59Z","cross_cats_sorted":[],"title_canon_sha256":"ba736b22683f4d91888d5daaf997dd9904a6beae4beb4f1c74c4f1b7d13123d4","abstract_canon_sha256":"3cc817fa882816ba15fe313c9ff2ef6e971da147079a2694c48563510d4d78b2"},"schema_version":"1.0"},"canonical_sha256":"d37efbad214ec5c264dffdea35209178a75a84e7e3c1acdc0a884a707c6a0b47","source":{"kind":"arxiv","id":"1211.0404","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0404","created_at":"2026-05-18T01:53:26Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0404v2","created_at":"2026-05-18T01:53:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0404","created_at":"2026-05-18T01:53:26Z"},{"alias_kind":"pith_short_12","alias_value":"2N7PXLJBJ3C4","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2N7PXLJBJ3C4EZG7","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2N7PXLJB","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:2N7PXLJBJ3C4EZG77XVDKIERPC","target":"record","payload":{"canonical_record":{"source":{"id":"1211.0404","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-11-02T10:04:59Z","cross_cats_sorted":[],"title_canon_sha256":"ba736b22683f4d91888d5daaf997dd9904a6beae4beb4f1c74c4f1b7d13123d4","abstract_canon_sha256":"3cc817fa882816ba15fe313c9ff2ef6e971da147079a2694c48563510d4d78b2"},"schema_version":"1.0"},"canonical_sha256":"d37efbad214ec5c264dffdea35209178a75a84e7e3c1acdc0a884a707c6a0b47","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:26.672566Z","signature_b64":"dBV5aKxHSfXw17Bqf/VvwKByQK1jgpF7K3Cj+t3x5ujsB/hA2fhNK90SJd2To2LK1r1SWhpk+1PRobi0ZK3+Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d37efbad214ec5c264dffdea35209178a75a84e7e3c1acdc0a884a707c6a0b47","last_reissued_at":"2026-05-18T01:53:26.671986Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:26.671986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.0404","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":"2026-05-18T01:53:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ws1w/6oi+1AncH4Ssmbi/FgXBa+36NtkkiDkNViq++pFXsvRmWUgZys/A40CyTzJETPKSCx2gwlS2MPt6c7TAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:40:55.082050Z"},"content_sha256":"c0d5eb0e8a9f359b4bc4b9e233caa38f2ed68c7f6e7315f9b869aa1a24c020ee","schema_version":"1.0","event_id":"sha256:c0d5eb0e8a9f359b4bc4b9e233caa38f2ed68c7f6e7315f9b869aa1a24c020ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:2N7PXLJBJ3C4EZG77XVDKIERPC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Deterministic generation of arbitrary symmetric states and entanglement classes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"B. P. Lanyon, C. E. Lopez, E. Solano, J. C. Retamal, L. Lamata, T. Bastin","submitted_at":"2012-11-02T10:04:59Z","abstract_excerpt":"We propose a method to generate arbitrary symmetric states of N qubits, which can be easily associated with their entanglement classes. It is particularly suited to quantum optics systems like trapped ions or superconducting circuits. We encode each qubit in two metastable levels of the system and use a bosonic quantum bus for creating the states. The method is deterministic and relies on a sequence of selective unitary gates upon the qubits within the system coherence time."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0404","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":"2026-05-18T01:53:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U+wT+o19DnIg0XjBQ7V+B0WKYnHbJEQHDHlGTIcm+v996Gmj9I4agZNkXM5hPi9pLevWD18WCxzu1XpTtAPeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:40:55.082726Z"},"content_sha256":"d3f37cda9af3a8ee7cc725d80ef21408d895d31ad88def08cfd44f5eb0f0618b","schema_version":"1.0","event_id":"sha256:d3f37cda9af3a8ee7cc725d80ef21408d895d31ad88def08cfd44f5eb0f0618b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2N7PXLJBJ3C4EZG77XVDKIERPC/bundle.json","state_url":"https://pith.science/pith/2N7PXLJBJ3C4EZG77XVDKIERPC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2N7PXLJBJ3C4EZG77XVDKIERPC/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":"2026-06-05T22:40:55Z","links":{"resolver":"https://pith.science/pith/2N7PXLJBJ3C4EZG77XVDKIERPC","bundle":"https://pith.science/pith/2N7PXLJBJ3C4EZG77XVDKIERPC/bundle.json","state":"https://pith.science/pith/2N7PXLJBJ3C4EZG77XVDKIERPC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2N7PXLJBJ3C4EZG77XVDKIERPC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2N7PXLJBJ3C4EZG77XVDKIERPC","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":"3cc817fa882816ba15fe313c9ff2ef6e971da147079a2694c48563510d4d78b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-11-02T10:04:59Z","title_canon_sha256":"ba736b22683f4d91888d5daaf997dd9904a6beae4beb4f1c74c4f1b7d13123d4"},"schema_version":"1.0","source":{"id":"1211.0404","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0404","created_at":"2026-05-18T01:53:26Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0404v2","created_at":"2026-05-18T01:53:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0404","created_at":"2026-05-18T01:53:26Z"},{"alias_kind":"pith_short_12","alias_value":"2N7PXLJBJ3C4","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2N7PXLJBJ3C4EZG7","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2N7PXLJB","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:d3f37cda9af3a8ee7cc725d80ef21408d895d31ad88def08cfd44f5eb0f0618b","target":"graph","created_at":"2026-05-18T01:53:26Z","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 generate arbitrary symmetric states of N qubits, which can be easily associated with their entanglement classes. It is particularly suited to quantum optics systems like trapped ions or superconducting circuits. We encode each qubit in two metastable levels of the system and use a bosonic quantum bus for creating the states. The method is deterministic and relies on a sequence of selective unitary gates upon the qubits within the system coherence time.","authors_text":"B. P. Lanyon, C. E. Lopez, E. Solano, J. C. Retamal, L. Lamata, T. Bastin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-11-02T10:04:59Z","title":"Deterministic generation of arbitrary symmetric states and entanglement classes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0404","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:c0d5eb0e8a9f359b4bc4b9e233caa38f2ed68c7f6e7315f9b869aa1a24c020ee","target":"record","created_at":"2026-05-18T01:53:26Z","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":"3cc817fa882816ba15fe313c9ff2ef6e971da147079a2694c48563510d4d78b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-11-02T10:04:59Z","title_canon_sha256":"ba736b22683f4d91888d5daaf997dd9904a6beae4beb4f1c74c4f1b7d13123d4"},"schema_version":"1.0","source":{"id":"1211.0404","kind":"arxiv","version":2}},"canonical_sha256":"d37efbad214ec5c264dffdea35209178a75a84e7e3c1acdc0a884a707c6a0b47","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d37efbad214ec5c264dffdea35209178a75a84e7e3c1acdc0a884a707c6a0b47","first_computed_at":"2026-05-18T01:53:26.671986Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:26.671986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dBV5aKxHSfXw17Bqf/VvwKByQK1jgpF7K3Cj+t3x5ujsB/hA2fhNK90SJd2To2LK1r1SWhpk+1PRobi0ZK3+Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:26.672566Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.0404","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0d5eb0e8a9f359b4bc4b9e233caa38f2ed68c7f6e7315f9b869aa1a24c020ee","sha256:d3f37cda9af3a8ee7cc725d80ef21408d895d31ad88def08cfd44f5eb0f0618b"],"state_sha256":"f9b96f0f0feb8cfa090bef391787fb608177f7d6dec73d6dc49547ef8b3c6305"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eyPnTfoKx/BjdWZkcvcXDz1y++i0R2MdLXTcPaTpbm7BJSYi5a4vi46yNGEwmCkw6f2xyoJH+sxx6ZNdMhEPDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T22:40:55.086570Z","bundle_sha256":"d3bf6e35f09ba6c6d25e2c18b1ad8a47823cf5e233f2387daaa736ac760d4449"}}