{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:LHWLANNMVSZ7FCHQQVQCXFDMZW","short_pith_number":"pith:LHWLANNM","canonical_record":{"source":{"id":"1207.1483","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-07-05T23:17:21Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"6d7b801b66e6dc6c0446e92d0145e78353db8a85d3d6c048086959ba17771bc3","abstract_canon_sha256":"f963a7be6c368425d00e782a1ee030cdd366954cbf826a1518ecd38d3f7323ee"},"schema_version":"1.0"},"canonical_sha256":"59ecb035acacb3f288f085602b946ccd81862b543b6a5ad1e974345fb1513729","source":{"kind":"arxiv","id":"1207.1483","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1483","created_at":"2026-05-18T03:38:12Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1483v2","created_at":"2026-05-18T03:38:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1483","created_at":"2026-05-18T03:38:12Z"},{"alias_kind":"pith_short_12","alias_value":"LHWLANNMVSZ7","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LHWLANNMVSZ7FCHQ","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LHWLANNM","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:LHWLANNMVSZ7FCHQQVQCXFDMZW","target":"record","payload":{"canonical_record":{"source":{"id":"1207.1483","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-07-05T23:17:21Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"6d7b801b66e6dc6c0446e92d0145e78353db8a85d3d6c048086959ba17771bc3","abstract_canon_sha256":"f963a7be6c368425d00e782a1ee030cdd366954cbf826a1518ecd38d3f7323ee"},"schema_version":"1.0"},"canonical_sha256":"59ecb035acacb3f288f085602b946ccd81862b543b6a5ad1e974345fb1513729","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:38:12.473842Z","signature_b64":"0kLE2VE3Pj+ahWDv6C/CUgZNBtnfUBCkV1Kg0zgy2SHiAQ1S1jOlTNpCS/jnbmcBH+wT9uTXYGegRTEvF0V7Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59ecb035acacb3f288f085602b946ccd81862b543b6a5ad1e974345fb1513729","last_reissued_at":"2026-05-18T03:38:12.473304Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:38:12.473304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.1483","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":"2026-05-18T03:38:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z5NtAxvRtB5xuYe2KI94NMi3gG5SNY1kQunvLBN1SSIOTQLxZblXAnycqfvYCUQJLr5s+rKow0+xh6ifbdAeCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:13:06.486023Z"},"content_sha256":"df1d75d0351f257efb0b43a49f66e4e3cc9c412266d11baecde86b12a56a2835","schema_version":"1.0","event_id":"sha256:df1d75d0351f257efb0b43a49f66e4e3cc9c412266d11baecde86b12a56a2835"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:LHWLANNMVSZ7FCHQQVQCXFDMZW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast generation of spin-squeezed states in bosonic Josephson junctions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"cond-mat.quant-gas","authors_text":"A. Polls, B. Juli\\'a-D\\'iaz, E. Torrontegui, J. G. Muga, J. Martorell","submitted_at":"2012-07-05T23:17:21Z","abstract_excerpt":"We describe methods for fast production of highly coherent-spin-squeezed many-body states in bosonic Josephson junctions (BJJs). We start from the known mapping of the two-site Bose-Hubbard (BH) Hamiltonian to that of a single effective particle evolving according to a Schr\\\"odinger-like equation in Fock space. Since, for repulsive interactions, the effective potential in Fock space is nearly parabolic, we extend recently derived protocols for shortcuts to adiabatic evolution in harmonic potentials to the many-body BH Hamiltonian. The best scaling of the squeezing parameter for large number of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1483","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":"2026-05-18T03:38:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2iUhahb9sEFeD0brMWUXoFB33sE2U2d5Pg4S3Qx/rDcufM2ZnxaaBn1X5jBy7zKDxAZ9BH/YOFlPzwU7UqIQAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:13:06.486416Z"},"content_sha256":"d78824480c35e8cd3608f43198393b45be8b8a151c14fc985ad3e200a0cb425e","schema_version":"1.0","event_id":"sha256:d78824480c35e8cd3608f43198393b45be8b8a151c14fc985ad3e200a0cb425e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LHWLANNMVSZ7FCHQQVQCXFDMZW/bundle.json","state_url":"https://pith.science/pith/LHWLANNMVSZ7FCHQQVQCXFDMZW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LHWLANNMVSZ7FCHQQVQCXFDMZW/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":"2026-05-28T12:13:06Z","links":{"resolver":"https://pith.science/pith/LHWLANNMVSZ7FCHQQVQCXFDMZW","bundle":"https://pith.science/pith/LHWLANNMVSZ7FCHQQVQCXFDMZW/bundle.json","state":"https://pith.science/pith/LHWLANNMVSZ7FCHQQVQCXFDMZW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LHWLANNMVSZ7FCHQQVQCXFDMZW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:LHWLANNMVSZ7FCHQQVQCXFDMZW","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":"f963a7be6c368425d00e782a1ee030cdd366954cbf826a1518ecd38d3f7323ee","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-07-05T23:17:21Z","title_canon_sha256":"6d7b801b66e6dc6c0446e92d0145e78353db8a85d3d6c048086959ba17771bc3"},"schema_version":"1.0","source":{"id":"1207.1483","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1483","created_at":"2026-05-18T03:38:12Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1483v2","created_at":"2026-05-18T03:38:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1483","created_at":"2026-05-18T03:38:12Z"},{"alias_kind":"pith_short_12","alias_value":"LHWLANNMVSZ7","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LHWLANNMVSZ7FCHQ","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LHWLANNM","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:d78824480c35e8cd3608f43198393b45be8b8a151c14fc985ad3e200a0cb425e","target":"graph","created_at":"2026-05-18T03:38:12Z","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 describe methods for fast production of highly coherent-spin-squeezed many-body states in bosonic Josephson junctions (BJJs). We start from the known mapping of the two-site Bose-Hubbard (BH) Hamiltonian to that of a single effective particle evolving according to a Schr\\\"odinger-like equation in Fock space. Since, for repulsive interactions, the effective potential in Fock space is nearly parabolic, we extend recently derived protocols for shortcuts to adiabatic evolution in harmonic potentials to the many-body BH Hamiltonian. The best scaling of the squeezing parameter for large number of","authors_text":"A. Polls, B. Juli\\'a-D\\'iaz, E. Torrontegui, J. G. Muga, J. Martorell","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-07-05T23:17:21Z","title":"Fast generation of spin-squeezed states in bosonic Josephson junctions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1483","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:df1d75d0351f257efb0b43a49f66e4e3cc9c412266d11baecde86b12a56a2835","target":"record","created_at":"2026-05-18T03:38:12Z","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":"f963a7be6c368425d00e782a1ee030cdd366954cbf826a1518ecd38d3f7323ee","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-07-05T23:17:21Z","title_canon_sha256":"6d7b801b66e6dc6c0446e92d0145e78353db8a85d3d6c048086959ba17771bc3"},"schema_version":"1.0","source":{"id":"1207.1483","kind":"arxiv","version":2}},"canonical_sha256":"59ecb035acacb3f288f085602b946ccd81862b543b6a5ad1e974345fb1513729","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59ecb035acacb3f288f085602b946ccd81862b543b6a5ad1e974345fb1513729","first_computed_at":"2026-05-18T03:38:12.473304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:38:12.473304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0kLE2VE3Pj+ahWDv6C/CUgZNBtnfUBCkV1Kg0zgy2SHiAQ1S1jOlTNpCS/jnbmcBH+wT9uTXYGegRTEvF0V7Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:38:12.473842Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.1483","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df1d75d0351f257efb0b43a49f66e4e3cc9c412266d11baecde86b12a56a2835","sha256:d78824480c35e8cd3608f43198393b45be8b8a151c14fc985ad3e200a0cb425e"],"state_sha256":"78434806610ab05d06618cd3a72d131741cbe6cbf44fc83c43825c2f7badd8de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pobpwU6EifbHD5DkmWaR7XOCGYolib3wi0D1CW5fNYpifGcBn3qRGPwQc1l5v2jdLfN/ECLf91QWgJAevAo2Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:13:06.488419Z","bundle_sha256":"5796c3371285600e8357b4a7f5a2c4d5bf749e04e2a7c163ad87cf3c34ee55b1"}}