{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HHUJMIGA7XPGG3P4K6NRLOXMWL","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":"ff0eebe3d10d7874efd7240bb42bbeeb2e76490627f88f9ee791ae690af6287a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-12-09T22:07:56Z","title_canon_sha256":"ac1a1c704bb04a6c0f7024218e4a36de4bc038cae8c19abebef85f99b171cd35"},"schema_version":"1.0","source":{"id":"1612.03198","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.03198","created_at":"2026-05-18T00:29:01Z"},{"alias_kind":"arxiv_version","alias_value":"1612.03198v2","created_at":"2026-05-18T00:29:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.03198","created_at":"2026-05-18T00:29:01Z"},{"alias_kind":"pith_short_12","alias_value":"HHUJMIGA7XPG","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HHUJMIGA7XPGG3P4","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HHUJMIGA","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:ae4a9198ff21c4be6a311ced6311bfbccba0031e86e26145ea3312941d0112cb","target":"graph","created_at":"2026-05-18T00:29:01Z","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":"Macroscopic mechanical qubits are fundamental both to test the classical-quantum boundary and present suitable candidates for quantum information processing. Motivated by these, we propose a feasible probabilistic scheme to generate an on-demand mechanical qubit, as well as Schr\\\"{o}dinger's cat and Fock number states. In order to accomplish this proposal, we study an open dispersive spin-mechanical system in the absence of any external driving. The procedure is solely based on spin post-selection in the weak coupling regime. Through this scheme we demonstrate that the achieved superposition i","authors_text":"Miguel Orszag, Ra\\'ul Coto, V\\'ictor Montenegro, Vitalie Eremeev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-12-09T22:07:56Z","title":"Macroscopic non-classical state preparation via post-selection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.03198","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:faf76bdee2df23f98cd86336d53e588886d97dcda9fff4fb877f600434f370e2","target":"record","created_at":"2026-05-18T00:29:01Z","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":"ff0eebe3d10d7874efd7240bb42bbeeb2e76490627f88f9ee791ae690af6287a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-12-09T22:07:56Z","title_canon_sha256":"ac1a1c704bb04a6c0f7024218e4a36de4bc038cae8c19abebef85f99b171cd35"},"schema_version":"1.0","source":{"id":"1612.03198","kind":"arxiv","version":2}},"canonical_sha256":"39e89620c0fdde636dfc579b15baecb2ecd06e402dfb2bcfc98d368d9e99f8a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"39e89620c0fdde636dfc579b15baecb2ecd06e402dfb2bcfc98d368d9e99f8a5","first_computed_at":"2026-05-18T00:29:01.764689Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:29:01.764689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5N98FvZoe5JTWIhcY+3QNlV08ssT/RuMVObdQpRa5wdY1RTQtRsT+4W1EYGOCP6UHAHdzndEiwdnmbE8NQvQBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:29:01.765122Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.03198","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:faf76bdee2df23f98cd86336d53e588886d97dcda9fff4fb877f600434f370e2","sha256:ae4a9198ff21c4be6a311ced6311bfbccba0031e86e26145ea3312941d0112cb"],"state_sha256":"9ba4d3a5cc473455f6b5576a29fd2cd068856315d6df4c22104b74389956639b"}