{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:GQBCTFTCRHWE2NSDHGSTN27BSH","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":"e090a206c725745d1c1eab8af71350774dc10300dc52a038d350e21e65061ec6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-07T20:30:06Z","title_canon_sha256":"7645a11092770deb7ea6e65c63408ebd09b57a82ef1a099170cd95fe50dbd3d4"},"schema_version":"1.0","source":{"id":"1603.02242","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.02242","created_at":"2026-05-18T00:53:08Z"},{"alias_kind":"arxiv_version","alias_value":"1603.02242v4","created_at":"2026-05-18T00:53:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.02242","created_at":"2026-05-18T00:53:08Z"},{"alias_kind":"pith_short_12","alias_value":"GQBCTFTCRHWE","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GQBCTFTCRHWE2NSD","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GQBCTFTC","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:4d4f695ff456d4e827f1d9bf9431c06427bfb690921e95826d39b24a3cb0bc9e","target":"graph","created_at":"2026-05-18T00:53:08Z","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 show that one can determine both parameters of a displacement acting on an oscillator with an accuracy which scales inversely with the square root of the number of photons in the oscillator. Our results are obtained by using a grid state as a sensor state for detecting small translations in phase space (displacements). Grid states were first proposed in (see https://doi.org/10.1103/PhysRevA.64.012310 ) for encoding a qubit into an oscillator: an efficient preparation protocol of such states, using a coupling to a qubit, was developed in (see https://doi.org/10.1103/PhysRevA.93.012315 ). We ","authors_text":"Barbara M. Terhal, Daniel Weigand, Kasper Duivenvoorden","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-07T20:30:06Z","title":"Single-Mode Displacement Sensor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.02242","kind":"arxiv","version":4},"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:d28ad1eab639e0c0c728aba2da0001c15715f98c3fc8f2886ba134e5ad7aea1c","target":"record","created_at":"2026-05-18T00:53:08Z","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":"e090a206c725745d1c1eab8af71350774dc10300dc52a038d350e21e65061ec6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-07T20:30:06Z","title_canon_sha256":"7645a11092770deb7ea6e65c63408ebd09b57a82ef1a099170cd95fe50dbd3d4"},"schema_version":"1.0","source":{"id":"1603.02242","kind":"arxiv","version":4}},"canonical_sha256":"340229966289ec4d364339a536ebe191cab83165043f4b993a2e1ee335462a5f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"340229966289ec4d364339a536ebe191cab83165043f4b993a2e1ee335462a5f","first_computed_at":"2026-05-18T00:53:08.463029Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:08.463029Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RKGwD2xjzkOHUIqz4TyuGWxT7KXBBTOycqc/9VRNgfI3RvhVdToCcST7jaK/fhKSHle/pKnH1sKOkIpzHDfADQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:08.463552Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.02242","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d28ad1eab639e0c0c728aba2da0001c15715f98c3fc8f2886ba134e5ad7aea1c","sha256:4d4f695ff456d4e827f1d9bf9431c06427bfb690921e95826d39b24a3cb0bc9e"],"state_sha256":"f44ee1b9224fe575fefa37f924526042d98ac360f77e946a6846449ce45133a6"}