{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VNZIR2YL3FBCG74SESRZNBS2A6","short_pith_number":"pith:VNZIR2YL","canonical_record":{"source":{"id":"1801.05666","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-17T14:03:45Z","cross_cats_sorted":[],"title_canon_sha256":"145425356aec09aa297f5416f873e0db6d1c5aa01b22b34e2764c1db9eb0c2c7","abstract_canon_sha256":"49d663c372eb553a470387738d2b4dba92c9fce7607035d74ef9ec27a30d2e8d"},"schema_version":"1.0"},"canonical_sha256":"ab7288eb0bd942237f9224a396865a07af29fdaeb6005900c49da4d5181c84a9","source":{"kind":"arxiv","id":"1801.05666","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.05666","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"arxiv_version","alias_value":"1801.05666v1","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.05666","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"pith_short_12","alias_value":"VNZIR2YL3FBC","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VNZIR2YL3FBCG74S","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VNZIR2YL","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VNZIR2YL3FBCG74SESRZNBS2A6","target":"record","payload":{"canonical_record":{"source":{"id":"1801.05666","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-17T14:03:45Z","cross_cats_sorted":[],"title_canon_sha256":"145425356aec09aa297f5416f873e0db6d1c5aa01b22b34e2764c1db9eb0c2c7","abstract_canon_sha256":"49d663c372eb553a470387738d2b4dba92c9fce7607035d74ef9ec27a30d2e8d"},"schema_version":"1.0"},"canonical_sha256":"ab7288eb0bd942237f9224a396865a07af29fdaeb6005900c49da4d5181c84a9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:11.660062Z","signature_b64":"a9oSmGiZ/CJSbnn2NuoiPDsSRFSwv1vVXki/uYDttGoZjJgIVjRnuXJbCS46Wz9gZPiE+ImKOq5Bhf22AwLrDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab7288eb0bd942237f9224a396865a07af29fdaeb6005900c49da4d5181c84a9","last_reissued_at":"2026-05-18T00:18:11.659392Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:11.659392Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.05666","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":"2026-05-18T00:18:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"adUIQw84giVlx3t/r0XjMrqnXAFoqPkTEcVz63904k+d2g+CBrEEf9haCmZuvmQs9q99GNnI/rrkAHRthnAkBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T03:46:36.381729Z"},"content_sha256":"a0a5845a39cef14e4557f2fb18e1ba9e6f42155689cb8b58ab8333c88a0f3cbc","schema_version":"1.0","event_id":"sha256:a0a5845a39cef14e4557f2fb18e1ba9e6f42155689cb8b58ab8333c88a0f3cbc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VNZIR2YL3FBCG74SESRZNBS2A6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optomechanical transistor with mechanical gain","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Lin Tian, X. Z. Zhang, Yong Li","submitted_at":"2018-01-17T14:03:45Z","abstract_excerpt":"We study an optomechanical transistor, where an input field can be transferred and amplified unidirectionally in a cyclic three-mode optomechanical system. In this system, the mechanical resonator is coupled simultaneously to two cavity modes. We show that it only requires a finite mechanical gain to achieve the nonreciprocal amplification. Here the nonreciprocity is caused by the phase difference between the linearized optomechanical couplings that breaks the time-reversal symmetry of this system. The amplification arises from the mechanical gain, which provides an effective phonon bath that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.05666","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":"2026-05-18T00:18:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zlzSmJlHqlATWxWT6X76denFzOXwCA+T5KrGYYdrIzeh51JgThVyoCu/KdBzEVAAuuI4acA+96fsyNmrjk0pDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T03:46:36.382327Z"},"content_sha256":"6116af2fb427eab46e556c591cad9e953dfe29247b2d2987f396bfe7ee89c55c","schema_version":"1.0","event_id":"sha256:6116af2fb427eab46e556c591cad9e953dfe29247b2d2987f396bfe7ee89c55c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VNZIR2YL3FBCG74SESRZNBS2A6/bundle.json","state_url":"https://pith.science/pith/VNZIR2YL3FBCG74SESRZNBS2A6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VNZIR2YL3FBCG74SESRZNBS2A6/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":"2026-06-05T03:46:36Z","links":{"resolver":"https://pith.science/pith/VNZIR2YL3FBCG74SESRZNBS2A6","bundle":"https://pith.science/pith/VNZIR2YL3FBCG74SESRZNBS2A6/bundle.json","state":"https://pith.science/pith/VNZIR2YL3FBCG74SESRZNBS2A6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VNZIR2YL3FBCG74SESRZNBS2A6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VNZIR2YL3FBCG74SESRZNBS2A6","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":"49d663c372eb553a470387738d2b4dba92c9fce7607035d74ef9ec27a30d2e8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-17T14:03:45Z","title_canon_sha256":"145425356aec09aa297f5416f873e0db6d1c5aa01b22b34e2764c1db9eb0c2c7"},"schema_version":"1.0","source":{"id":"1801.05666","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.05666","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"arxiv_version","alias_value":"1801.05666v1","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.05666","created_at":"2026-05-18T00:18:11Z"},{"alias_kind":"pith_short_12","alias_value":"VNZIR2YL3FBC","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VNZIR2YL3FBCG74S","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VNZIR2YL","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:6116af2fb427eab46e556c591cad9e953dfe29247b2d2987f396bfe7ee89c55c","target":"graph","created_at":"2026-05-18T00:18:11Z","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 study an optomechanical transistor, where an input field can be transferred and amplified unidirectionally in a cyclic three-mode optomechanical system. In this system, the mechanical resonator is coupled simultaneously to two cavity modes. We show that it only requires a finite mechanical gain to achieve the nonreciprocal amplification. Here the nonreciprocity is caused by the phase difference between the linearized optomechanical couplings that breaks the time-reversal symmetry of this system. The amplification arises from the mechanical gain, which provides an effective phonon bath that ","authors_text":"Lin Tian, X. Z. Zhang, Yong Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-17T14:03:45Z","title":"Optomechanical transistor with mechanical gain"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.05666","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:a0a5845a39cef14e4557f2fb18e1ba9e6f42155689cb8b58ab8333c88a0f3cbc","target":"record","created_at":"2026-05-18T00:18:11Z","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":"49d663c372eb553a470387738d2b4dba92c9fce7607035d74ef9ec27a30d2e8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-17T14:03:45Z","title_canon_sha256":"145425356aec09aa297f5416f873e0db6d1c5aa01b22b34e2764c1db9eb0c2c7"},"schema_version":"1.0","source":{"id":"1801.05666","kind":"arxiv","version":1}},"canonical_sha256":"ab7288eb0bd942237f9224a396865a07af29fdaeb6005900c49da4d5181c84a9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab7288eb0bd942237f9224a396865a07af29fdaeb6005900c49da4d5181c84a9","first_computed_at":"2026-05-18T00:18:11.659392Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:11.659392Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a9oSmGiZ/CJSbnn2NuoiPDsSRFSwv1vVXki/uYDttGoZjJgIVjRnuXJbCS46Wz9gZPiE+ImKOq5Bhf22AwLrDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:11.660062Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.05666","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0a5845a39cef14e4557f2fb18e1ba9e6f42155689cb8b58ab8333c88a0f3cbc","sha256:6116af2fb427eab46e556c591cad9e953dfe29247b2d2987f396bfe7ee89c55c"],"state_sha256":"07848a4cbac764f8aef4d23c60d7cbc401e58b8025bf087518e9b7901dabd8af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iTYsGAWwuHfq/u8NWHNpDo6KDzgSY4tJbF5o25GQVOQg6+7kK9R+w1HjvFxMWJpd875VwGw+UjLhIARfQThpAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T03:46:36.385878Z","bundle_sha256":"611240c886c879138c5fcecf4886fe4b450e1b96c3e2599b1e26e6b9b49af764"}}