{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:NO7I2GHBERJHGPO5VJBIGJX7CT","short_pith_number":"pith:NO7I2GHB","canonical_record":{"source":{"id":"1905.05443","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-05-14T08:17:58Z","cross_cats_sorted":[],"title_canon_sha256":"574a6d834448eb27a2b4cf2e5d4d0be77c573725363c070692a6c20063189f7f","abstract_canon_sha256":"d3db6a01ea7065c76526c8fe8357c1571fcd1dda7a51cf5f8f12eee5dc56820c"},"schema_version":"1.0"},"canonical_sha256":"6bbe8d18e12452733dddaa428326ff14d2cac271c17be8f1c4a16c1f6e5078ca","source":{"kind":"arxiv","id":"1905.05443","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.05443","created_at":"2026-05-17T23:46:16Z"},{"alias_kind":"arxiv_version","alias_value":"1905.05443v1","created_at":"2026-05-17T23:46:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.05443","created_at":"2026-05-17T23:46:16Z"},{"alias_kind":"pith_short_12","alias_value":"NO7I2GHBERJH","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NO7I2GHBERJHGPO5","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NO7I2GHB","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:NO7I2GHBERJHGPO5VJBIGJX7CT","target":"record","payload":{"canonical_record":{"source":{"id":"1905.05443","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-05-14T08:17:58Z","cross_cats_sorted":[],"title_canon_sha256":"574a6d834448eb27a2b4cf2e5d4d0be77c573725363c070692a6c20063189f7f","abstract_canon_sha256":"d3db6a01ea7065c76526c8fe8357c1571fcd1dda7a51cf5f8f12eee5dc56820c"},"schema_version":"1.0"},"canonical_sha256":"6bbe8d18e12452733dddaa428326ff14d2cac271c17be8f1c4a16c1f6e5078ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:16.473045Z","signature_b64":"8a48h/sReWalN36fHMzxNKkq0Hl+zzW3VP9ywKowP1leKvzxMRFdm5dy0YM8ICI+wmqP9HADAs5jjsajHiImDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6bbe8d18e12452733dddaa428326ff14d2cac271c17be8f1c4a16c1f6e5078ca","last_reissued_at":"2026-05-17T23:46:16.472390Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:16.472390Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.05443","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":"2026-05-17T23:46:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+ablNFERxPdKYplGYIqZaAuLr2quwnCX7xLouNFScddEKYRPwjO0VDYs+o97MrRWuB/crC7SC0GCwEhXfMpVBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T13:05:01.964911Z"},"content_sha256":"1a7bab299580ccacc173f133dd3f9302fc045562f9f6e01fcc809677353fa921","schema_version":"1.0","event_id":"sha256:1a7bab299580ccacc173f133dd3f9302fc045562f9f6e01fcc809677353fa921"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:NO7I2GHBERJHGPO5VJBIGJX7CT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superposition of macroscopically squeezed states with enhanced squeezing in cavity optomechanical system at single-photon level","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Sai-nan Huai, Wei Nie, Yun-bo Zhang, Yu-xi Liu","submitted_at":"2019-05-14T08:17:58Z","abstract_excerpt":"We propose an efficient approach to generate the superposed macroscopically squeezed states with enhanced squeezing in a two-mode optomechanical system. This can be achieved by introducing a sinusoidal modulation to either the cavity frequencies or the coupling strengths between two cavity modes. The squeezement of the oscillator can be significantly enhanced to 12.16 dB with single photon, once the relative ratio of coupling strength is optimized under proper conditions. Further enhanced squeezing can be obtained by carefully adjusting the system parameters. In terms of the Wigner quasi-proba"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.05443","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":"2026-05-17T23:46:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1pNHGwb9wvKGlhh9tZmTthIOtwjGj2EWYQb3U6RSJ1UEiUXm1dUSpYBNds4HqSwHevkDcB40OtOhOCZPwor2Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T13:05:01.965632Z"},"content_sha256":"4dd4479ef52adfab3a5279d6e457ba1116da9b2784c9404991052becf6c8d225","schema_version":"1.0","event_id":"sha256:4dd4479ef52adfab3a5279d6e457ba1116da9b2784c9404991052becf6c8d225"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NO7I2GHBERJHGPO5VJBIGJX7CT/bundle.json","state_url":"https://pith.science/pith/NO7I2GHBERJHGPO5VJBIGJX7CT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NO7I2GHBERJHGPO5VJBIGJX7CT/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":"2026-06-06T13:05:01Z","links":{"resolver":"https://pith.science/pith/NO7I2GHBERJHGPO5VJBIGJX7CT","bundle":"https://pith.science/pith/NO7I2GHBERJHGPO5VJBIGJX7CT/bundle.json","state":"https://pith.science/pith/NO7I2GHBERJHGPO5VJBIGJX7CT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NO7I2GHBERJHGPO5VJBIGJX7CT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NO7I2GHBERJHGPO5VJBIGJX7CT","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":"d3db6a01ea7065c76526c8fe8357c1571fcd1dda7a51cf5f8f12eee5dc56820c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-05-14T08:17:58Z","title_canon_sha256":"574a6d834448eb27a2b4cf2e5d4d0be77c573725363c070692a6c20063189f7f"},"schema_version":"1.0","source":{"id":"1905.05443","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.05443","created_at":"2026-05-17T23:46:16Z"},{"alias_kind":"arxiv_version","alias_value":"1905.05443v1","created_at":"2026-05-17T23:46:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.05443","created_at":"2026-05-17T23:46:16Z"},{"alias_kind":"pith_short_12","alias_value":"NO7I2GHBERJH","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NO7I2GHBERJHGPO5","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NO7I2GHB","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:4dd4479ef52adfab3a5279d6e457ba1116da9b2784c9404991052becf6c8d225","target":"graph","created_at":"2026-05-17T23:46:16Z","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 an efficient approach to generate the superposed macroscopically squeezed states with enhanced squeezing in a two-mode optomechanical system. This can be achieved by introducing a sinusoidal modulation to either the cavity frequencies or the coupling strengths between two cavity modes. The squeezement of the oscillator can be significantly enhanced to 12.16 dB with single photon, once the relative ratio of coupling strength is optimized under proper conditions. Further enhanced squeezing can be obtained by carefully adjusting the system parameters. In terms of the Wigner quasi-proba","authors_text":"Sai-nan Huai, Wei Nie, Yun-bo Zhang, Yu-xi Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-05-14T08:17:58Z","title":"Superposition of macroscopically squeezed states with enhanced squeezing in cavity optomechanical system at single-photon level"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.05443","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":"sha256:1a7bab299580ccacc173f133dd3f9302fc045562f9f6e01fcc809677353fa921","target":"record","created_at":"2026-05-17T23:46:16Z","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":"d3db6a01ea7065c76526c8fe8357c1571fcd1dda7a51cf5f8f12eee5dc56820c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-05-14T08:17:58Z","title_canon_sha256":"574a6d834448eb27a2b4cf2e5d4d0be77c573725363c070692a6c20063189f7f"},"schema_version":"1.0","source":{"id":"1905.05443","kind":"arxiv","version":1}},"canonical_sha256":"6bbe8d18e12452733dddaa428326ff14d2cac271c17be8f1c4a16c1f6e5078ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6bbe8d18e12452733dddaa428326ff14d2cac271c17be8f1c4a16c1f6e5078ca","first_computed_at":"2026-05-17T23:46:16.472390Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:16.472390Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8a48h/sReWalN36fHMzxNKkq0Hl+zzW3VP9ywKowP1leKvzxMRFdm5dy0YM8ICI+wmqP9HADAs5jjsajHiImDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:16.473045Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.05443","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1a7bab299580ccacc173f133dd3f9302fc045562f9f6e01fcc809677353fa921","sha256:4dd4479ef52adfab3a5279d6e457ba1116da9b2784c9404991052becf6c8d225"],"state_sha256":"b969a7cb9bc62fe88722f65f0589e7e7c2c47cfafd369bc9e5630a2ea7d05c6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MEQ9Wg8iZ8oZ2fyTYFjD7mJQqlbnQPxIG1R4VLOqO6PL3oPIsM/fvvsNnaGk3i2O1NHY5Rmauyb3wyGdzSmYDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T13:05:01.969084Z","bundle_sha256":"5402d01dfde34065f9c6e1775cc74910066c04b6755b49ed41a632e487bd86e7"}}