{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:7J3XNZCAWFLVJRVXE3MU5V5HA3","short_pith_number":"pith:7J3XNZCA","canonical_record":{"source":{"id":"1208.3411","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-16T16:18:48Z","cross_cats_sorted":[],"title_canon_sha256":"1834079837a5345db378513cfe45e7d3b9c69a9a5d4698f7cda9f5b85ddf40bf","abstract_canon_sha256":"1f1936cbef9ba68863c775335aef23491e837d6ef7ec9fe4e87399c69867118b"},"schema_version":"1.0"},"canonical_sha256":"fa7776e440b15754c6b726d94ed7a706e50f98b0abedea80fd1c2fe3ca0026af","source":{"kind":"arxiv","id":"1208.3411","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.3411","created_at":"2026-05-18T03:48:35Z"},{"alias_kind":"arxiv_version","alias_value":"1208.3411v1","created_at":"2026-05-18T03:48:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.3411","created_at":"2026-05-18T03:48:35Z"},{"alias_kind":"pith_short_12","alias_value":"7J3XNZCAWFLV","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"7J3XNZCAWFLVJRVX","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"7J3XNZCA","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:7J3XNZCAWFLVJRVXE3MU5V5HA3","target":"record","payload":{"canonical_record":{"source":{"id":"1208.3411","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-16T16:18:48Z","cross_cats_sorted":[],"title_canon_sha256":"1834079837a5345db378513cfe45e7d3b9c69a9a5d4698f7cda9f5b85ddf40bf","abstract_canon_sha256":"1f1936cbef9ba68863c775335aef23491e837d6ef7ec9fe4e87399c69867118b"},"schema_version":"1.0"},"canonical_sha256":"fa7776e440b15754c6b726d94ed7a706e50f98b0abedea80fd1c2fe3ca0026af","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:48:35.947714Z","signature_b64":"i09X3TMIW4nGHo23JLA3NjAK7sYO9+PCNdDlidaBNLHWq92UtNuv5/2wJAnqe0yG7MYHMuk9y9Fi1S9fHA5ACA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fa7776e440b15754c6b726d94ed7a706e50f98b0abedea80fd1c2fe3ca0026af","last_reissued_at":"2026-05-18T03:48:35.947227Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:48:35.947227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.3411","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":"2026-05-18T03:48:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u0fFtULpXnzzbNAPuItH/ihKO9JwrQUvZI7HAKCLH67I19nSqg2Lw++rUero9YnKg5T1gIsG/qNAnAJY8CL5Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T11:38:17.030988Z"},"content_sha256":"67b4ea801cd50437b549aaf7b660f4bf76823187fe022e60cd5d66c762df0f68","schema_version":"1.0","event_id":"sha256:67b4ea801cd50437b549aaf7b660f4bf76823187fe022e60cd5d66c762df0f68"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:7J3XNZCAWFLVJRVXE3MU5V5HA3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Generation of a spin-squeezed state with trapped ions using a dressing field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Atsushi Noguchi, Kenji Toyoda, Shinji Urabe","submitted_at":"2012-08-16T16:18:48Z","abstract_excerpt":"We propose a method for generating a spin-squeezed state that is a symmetric Dicke state, with trapped ions using only global access. The eigenstates of the ions under a strong dressing field become symmetric Dicke states and the M$\\o$lmer--S$\\o$rensen interaction selectively couples one of them to an initially populated auxiliary state. A $\\mid D_{2n}^n>$ state, which is maximally spin squeezed, can be generated with high fidelity using only square pulses. Using an adiabatic technique, the ideal maximally spin-squeezed state is generated."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.3411","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":"2026-05-18T03:48:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cZqZQOF+t1TYszlVTgKJQRb8sPYI+sW3JvFWSOOZ5IEAViIMFjLRgCbO7fVzsSUSj5Sz7SdEcnrgCmsabj1TDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T11:38:17.031601Z"},"content_sha256":"b25e5234119a6f603aafe9c66bc2ea7314b323ab077873250d1367a340af0591","schema_version":"1.0","event_id":"sha256:b25e5234119a6f603aafe9c66bc2ea7314b323ab077873250d1367a340af0591"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7J3XNZCAWFLVJRVXE3MU5V5HA3/bundle.json","state_url":"https://pith.science/pith/7J3XNZCAWFLVJRVXE3MU5V5HA3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7J3XNZCAWFLVJRVXE3MU5V5HA3/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":"2026-06-02T11:38:17Z","links":{"resolver":"https://pith.science/pith/7J3XNZCAWFLVJRVXE3MU5V5HA3","bundle":"https://pith.science/pith/7J3XNZCAWFLVJRVXE3MU5V5HA3/bundle.json","state":"https://pith.science/pith/7J3XNZCAWFLVJRVXE3MU5V5HA3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7J3XNZCAWFLVJRVXE3MU5V5HA3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7J3XNZCAWFLVJRVXE3MU5V5HA3","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":"1f1936cbef9ba68863c775335aef23491e837d6ef7ec9fe4e87399c69867118b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-16T16:18:48Z","title_canon_sha256":"1834079837a5345db378513cfe45e7d3b9c69a9a5d4698f7cda9f5b85ddf40bf"},"schema_version":"1.0","source":{"id":"1208.3411","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.3411","created_at":"2026-05-18T03:48:35Z"},{"alias_kind":"arxiv_version","alias_value":"1208.3411v1","created_at":"2026-05-18T03:48:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.3411","created_at":"2026-05-18T03:48:35Z"},{"alias_kind":"pith_short_12","alias_value":"7J3XNZCAWFLV","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"7J3XNZCAWFLVJRVX","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"7J3XNZCA","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:b25e5234119a6f603aafe9c66bc2ea7314b323ab077873250d1367a340af0591","target":"graph","created_at":"2026-05-18T03:48:35Z","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":"We propose a method for generating a spin-squeezed state that is a symmetric Dicke state, with trapped ions using only global access. The eigenstates of the ions under a strong dressing field become symmetric Dicke states and the M$\\o$lmer--S$\\o$rensen interaction selectively couples one of them to an initially populated auxiliary state. A $\\mid D_{2n}^n>$ state, which is maximally spin squeezed, can be generated with high fidelity using only square pulses. Using an adiabatic technique, the ideal maximally spin-squeezed state is generated.","authors_text":"Atsushi Noguchi, Kenji Toyoda, Shinji Urabe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-16T16:18:48Z","title":"Generation of a spin-squeezed state with trapped ions using a dressing field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.3411","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":"sha256:67b4ea801cd50437b549aaf7b660f4bf76823187fe022e60cd5d66c762df0f68","target":"record","created_at":"2026-05-18T03:48:35Z","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":"1f1936cbef9ba68863c775335aef23491e837d6ef7ec9fe4e87399c69867118b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-08-16T16:18:48Z","title_canon_sha256":"1834079837a5345db378513cfe45e7d3b9c69a9a5d4698f7cda9f5b85ddf40bf"},"schema_version":"1.0","source":{"id":"1208.3411","kind":"arxiv","version":1}},"canonical_sha256":"fa7776e440b15754c6b726d94ed7a706e50f98b0abedea80fd1c2fe3ca0026af","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa7776e440b15754c6b726d94ed7a706e50f98b0abedea80fd1c2fe3ca0026af","first_computed_at":"2026-05-18T03:48:35.947227Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:48:35.947227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i09X3TMIW4nGHo23JLA3NjAK7sYO9+PCNdDlidaBNLHWq92UtNuv5/2wJAnqe0yG7MYHMuk9y9Fi1S9fHA5ACA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:48:35.947714Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.3411","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67b4ea801cd50437b549aaf7b660f4bf76823187fe022e60cd5d66c762df0f68","sha256:b25e5234119a6f603aafe9c66bc2ea7314b323ab077873250d1367a340af0591"],"state_sha256":"78f7cd5a30e681f6111e50563d23cfe88a57332c39a53170eee29363c67fd008"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p6zv4nzYXZ6Usc9e3xMsYM7B+trsUa8uvxuq2o4orCs1FWu3q3pFCD/N2pSOswWnaqW9eAX8/rn1lOiRQn+GCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T11:38:17.034521Z","bundle_sha256":"e6b6d400378268a0bea05c4a3bbd8c780e5eb9371136622d759ae630bbd4b66b"}}