{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:ZO3YCZBUVSVUTW2V7BF35PUILE","short_pith_number":"pith:ZO3YCZBU","canonical_record":{"source":{"id":"0912.0196","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-12-01T16:30:23Z","cross_cats_sorted":[],"title_canon_sha256":"9c4d7d4fa15e1ad50b18b32523ae02fce2fbf4c1340c002fce36772ea8c2ec9e","abstract_canon_sha256":"723c09e7479415565045699a7a09a2b14959dd5bb641280b09c212c8ceeecc5e"},"schema_version":"1.0"},"canonical_sha256":"cbb7816434acab49db55f84bbebe8859143e81a9ec0f536e87033ac0b9ff3d68","source":{"kind":"arxiv","id":"0912.0196","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.0196","created_at":"2026-05-18T02:10:35Z"},{"alias_kind":"arxiv_version","alias_value":"0912.0196v3","created_at":"2026-05-18T02:10:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.0196","created_at":"2026-05-18T02:10:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZO3YCZBUVSVU","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"ZO3YCZBUVSVUTW2V","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"ZO3YCZBU","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:ZO3YCZBUVSVUTW2V7BF35PUILE","target":"record","payload":{"canonical_record":{"source":{"id":"0912.0196","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-12-01T16:30:23Z","cross_cats_sorted":[],"title_canon_sha256":"9c4d7d4fa15e1ad50b18b32523ae02fce2fbf4c1340c002fce36772ea8c2ec9e","abstract_canon_sha256":"723c09e7479415565045699a7a09a2b14959dd5bb641280b09c212c8ceeecc5e"},"schema_version":"1.0"},"canonical_sha256":"cbb7816434acab49db55f84bbebe8859143e81a9ec0f536e87033ac0b9ff3d68","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:35.104001Z","signature_b64":"RhXrJe9AEIppmm+iMkEuMN4moKBlpcW4s+r+iKqK/D9UX9wrQ4ovtwil6XgHT4T0Wx3yUHlklF7cOHvhNjpdBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cbb7816434acab49db55f84bbebe8859143e81a9ec0f536e87033ac0b9ff3d68","last_reissued_at":"2026-05-18T02:10:35.103347Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:35.103347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0912.0196","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":"2026-05-18T02:10:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sw7Xz91sofQXVmJU74DBdbePC9cPRZn2ZVM/5dtpJqx+7ZCc32RmSS9nyX2me3aA0B6bqdrJq8wDgiQuubz1Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:54:26.238466Z"},"content_sha256":"a425f5f2dfa90abed1fc8c36a3eb5e8b3d4309c3cc51d2a745fee31f3d9ba037","schema_version":"1.0","event_id":"sha256:a425f5f2dfa90abed1fc8c36a3eb5e8b3d4309c3cc51d2a745fee31f3d9ba037"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:ZO3YCZBUVSVUTW2V7BF35PUILE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Colloquium: Trapped ions as quantum bits -- essential numerical tools","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ferdinand Schmidt-Kaler, Frank Ziesel, Kilian Singer, Michael Murphy, Peter Ivanov, Tommaso Calarco, Ulrich Poschinger","submitted_at":"2009-12-01T16:30:23Z","abstract_excerpt":"Trapped, laser-cooled atoms and ions are quantum systems which can be experimentally controlled with an as yet unmatched degree of precision. Due to the control of the motion and the internal degrees of freedom, these quantum systems can be adequately described by a well known Hamiltonian. In this colloquium, we present powerful numerical tools for the optimization of the external control of the motional and internal states of trapped neutral atoms, explicitly applied to the case of trapped laser-cooled ions in a segmented ion-trap. We then delve into solving inverse problems, when optimizing "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.0196","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":"2026-05-18T02:10:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GAvPR2RnfTBuOdGuB0y/rE6iLZLgtPH8AOfpKLdrxRs6Z/SVbyAq5zPiA+5fW5R29gkIAb8tFqw7w9rThvuEAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:54:26.238876Z"},"content_sha256":"2cf16a62b5aee478f7369ef49dc303c0d7f0e360305a54cc5148163344020972","schema_version":"1.0","event_id":"sha256:2cf16a62b5aee478f7369ef49dc303c0d7f0e360305a54cc5148163344020972"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZO3YCZBUVSVUTW2V7BF35PUILE/bundle.json","state_url":"https://pith.science/pith/ZO3YCZBUVSVUTW2V7BF35PUILE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZO3YCZBUVSVUTW2V7BF35PUILE/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":"2026-05-31T21:54:26Z","links":{"resolver":"https://pith.science/pith/ZO3YCZBUVSVUTW2V7BF35PUILE","bundle":"https://pith.science/pith/ZO3YCZBUVSVUTW2V7BF35PUILE/bundle.json","state":"https://pith.science/pith/ZO3YCZBUVSVUTW2V7BF35PUILE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZO3YCZBUVSVUTW2V7BF35PUILE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:ZO3YCZBUVSVUTW2V7BF35PUILE","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":"723c09e7479415565045699a7a09a2b14959dd5bb641280b09c212c8ceeecc5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-12-01T16:30:23Z","title_canon_sha256":"9c4d7d4fa15e1ad50b18b32523ae02fce2fbf4c1340c002fce36772ea8c2ec9e"},"schema_version":"1.0","source":{"id":"0912.0196","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.0196","created_at":"2026-05-18T02:10:35Z"},{"alias_kind":"arxiv_version","alias_value":"0912.0196v3","created_at":"2026-05-18T02:10:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.0196","created_at":"2026-05-18T02:10:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZO3YCZBUVSVU","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"ZO3YCZBUVSVUTW2V","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"ZO3YCZBU","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:2cf16a62b5aee478f7369ef49dc303c0d7f0e360305a54cc5148163344020972","target":"graph","created_at":"2026-05-18T02:10:35Z","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":"Trapped, laser-cooled atoms and ions are quantum systems which can be experimentally controlled with an as yet unmatched degree of precision. Due to the control of the motion and the internal degrees of freedom, these quantum systems can be adequately described by a well known Hamiltonian. In this colloquium, we present powerful numerical tools for the optimization of the external control of the motional and internal states of trapped neutral atoms, explicitly applied to the case of trapped laser-cooled ions in a segmented ion-trap. We then delve into solving inverse problems, when optimizing ","authors_text":"Ferdinand Schmidt-Kaler, Frank Ziesel, Kilian Singer, Michael Murphy, Peter Ivanov, Tommaso Calarco, Ulrich Poschinger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-12-01T16:30:23Z","title":"Colloquium: Trapped ions as quantum bits -- essential numerical tools"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.0196","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:a425f5f2dfa90abed1fc8c36a3eb5e8b3d4309c3cc51d2a745fee31f3d9ba037","target":"record","created_at":"2026-05-18T02:10:35Z","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":"723c09e7479415565045699a7a09a2b14959dd5bb641280b09c212c8ceeecc5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-12-01T16:30:23Z","title_canon_sha256":"9c4d7d4fa15e1ad50b18b32523ae02fce2fbf4c1340c002fce36772ea8c2ec9e"},"schema_version":"1.0","source":{"id":"0912.0196","kind":"arxiv","version":3}},"canonical_sha256":"cbb7816434acab49db55f84bbebe8859143e81a9ec0f536e87033ac0b9ff3d68","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cbb7816434acab49db55f84bbebe8859143e81a9ec0f536e87033ac0b9ff3d68","first_computed_at":"2026-05-18T02:10:35.103347Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:35.103347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RhXrJe9AEIppmm+iMkEuMN4moKBlpcW4s+r+iKqK/D9UX9wrQ4ovtwil6XgHT4T0Wx3yUHlklF7cOHvhNjpdBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:35.104001Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.0196","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a425f5f2dfa90abed1fc8c36a3eb5e8b3d4309c3cc51d2a745fee31f3d9ba037","sha256:2cf16a62b5aee478f7369ef49dc303c0d7f0e360305a54cc5148163344020972"],"state_sha256":"c895e1f9bb126feab7713740994c31b6ce7a93f87a0a146c2a60f2118729bed7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MEyUBlVjx9qcY1mX/skuTLBjlD1jk1O68IX5aQBLp8cUuMTJnFbD1gTg34gfhidihwV4+CE8570Vmd79pXP7Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T21:54:26.242287Z","bundle_sha256":"00ca34d6c09712142d7ee0e648d6d73fa4ea76dd2a99e1ecba942bcc3a3d363d"}}