{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:RXV3AKPK6EBQACUK77KOB6NG6E","short_pith_number":"pith:RXV3AKPK","canonical_record":{"source":{"id":"1701.06206","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-22T18:50:47Z","cross_cats_sorted":[],"title_canon_sha256":"e984c33451760dc7579850074ace784954a85fdbcc652141cb74d7f4d843b7e9","abstract_canon_sha256":"d5c5f93ba8b4d76b488aeb54cb6f0660bbf5f13afdb073632921d6b397801bbf"},"schema_version":"1.0"},"canonical_sha256":"8debb029eaf103000a8affd4e0f9a6f118a9a5f9cdabadb5ce2eefefee50a4ae","source":{"kind":"arxiv","id":"1701.06206","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.06206","created_at":"2026-05-18T00:52:19Z"},{"alias_kind":"arxiv_version","alias_value":"1701.06206v1","created_at":"2026-05-18T00:52:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.06206","created_at":"2026-05-18T00:52:19Z"},{"alias_kind":"pith_short_12","alias_value":"RXV3AKPK6EBQ","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"RXV3AKPK6EBQACUK","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"RXV3AKPK","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:RXV3AKPK6EBQACUK77KOB6NG6E","target":"record","payload":{"canonical_record":{"source":{"id":"1701.06206","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-22T18:50:47Z","cross_cats_sorted":[],"title_canon_sha256":"e984c33451760dc7579850074ace784954a85fdbcc652141cb74d7f4d843b7e9","abstract_canon_sha256":"d5c5f93ba8b4d76b488aeb54cb6f0660bbf5f13afdb073632921d6b397801bbf"},"schema_version":"1.0"},"canonical_sha256":"8debb029eaf103000a8affd4e0f9a6f118a9a5f9cdabadb5ce2eefefee50a4ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:19.010175Z","signature_b64":"c0y6YFG+/514NLKcgwfcWqRShObmL2/bGfVQTPrjupMFKJbFIVLo+kPHdnDbGMUGp/eVPjQ7XMziLAodZp8LCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8debb029eaf103000a8affd4e0f9a6f118a9a5f9cdabadb5ce2eefefee50a4ae","last_reissued_at":"2026-05-18T00:52:19.009693Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:19.009693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.06206","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":"2026-05-18T00:52:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/JIQNWbsgWpB+yeuAhqpzRd5gUdB85PdrkYTpm7ie2w6RB4QnBC/qH2y605hEszC86rea0fCTJ4Yaj3ct3AICA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:35:54.890685Z"},"content_sha256":"2f603d3b41b126b5264b85df6be1c5724a3fce7b1e1614eb1c24551b5379b34b","schema_version":"1.0","event_id":"sha256:2f603d3b41b126b5264b85df6be1c5724a3fce7b1e1614eb1c24551b5379b34b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:RXV3AKPK6EBQACUK77KOB6NG6E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fundamental limits of quantum-secure covert optical sensing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Animesh Datta, Boulat A. Bash, Christos N. Gagatsos, Saikat Guha","submitted_at":"2017-01-22T18:50:47Z","abstract_excerpt":"We present a square root law for active sensing of phase $\\theta$ of a single pixel using optical probes that pass through a single-mode lossy thermal-noise bosonic channel. Specifically, we show that, when the sensor uses an $n$-mode covert optical probe, the mean squared error (MSE) of the resulting estimator $\\hat{\\theta}_n$ scales as $\\langle (\\theta-\\hat{\\theta}_n)^2\\rangle=\\mathcal{O}(1/\\sqrt{n})$; improving the scaling necessarily leads to detection by the adversary with high probability. We fully characterize this limit and show that it is achievable using laser light illumination and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.06206","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":"2026-05-18T00:52:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T6D/v7c7OaK4nPcYUaytL5zwKjPFwTSYYDCmv8RSOP2dImn7lr/nsvWxz0bmJ5Q67JdMYMzLtGMUPPly1FaHDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:35:54.891258Z"},"content_sha256":"07e2a670e21d00bc5fca117337765fab4cc98f50d767f29ac32c086580e53ecd","schema_version":"1.0","event_id":"sha256:07e2a670e21d00bc5fca117337765fab4cc98f50d767f29ac32c086580e53ecd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RXV3AKPK6EBQACUK77KOB6NG6E/bundle.json","state_url":"https://pith.science/pith/RXV3AKPK6EBQACUK77KOB6NG6E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RXV3AKPK6EBQACUK77KOB6NG6E/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":"2026-05-27T17:35:54Z","links":{"resolver":"https://pith.science/pith/RXV3AKPK6EBQACUK77KOB6NG6E","bundle":"https://pith.science/pith/RXV3AKPK6EBQACUK77KOB6NG6E/bundle.json","state":"https://pith.science/pith/RXV3AKPK6EBQACUK77KOB6NG6E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RXV3AKPK6EBQACUK77KOB6NG6E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:RXV3AKPK6EBQACUK77KOB6NG6E","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":"d5c5f93ba8b4d76b488aeb54cb6f0660bbf5f13afdb073632921d6b397801bbf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-22T18:50:47Z","title_canon_sha256":"e984c33451760dc7579850074ace784954a85fdbcc652141cb74d7f4d843b7e9"},"schema_version":"1.0","source":{"id":"1701.06206","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.06206","created_at":"2026-05-18T00:52:19Z"},{"alias_kind":"arxiv_version","alias_value":"1701.06206v1","created_at":"2026-05-18T00:52:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.06206","created_at":"2026-05-18T00:52:19Z"},{"alias_kind":"pith_short_12","alias_value":"RXV3AKPK6EBQ","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"RXV3AKPK6EBQACUK","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"RXV3AKPK","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:07e2a670e21d00bc5fca117337765fab4cc98f50d767f29ac32c086580e53ecd","target":"graph","created_at":"2026-05-18T00:52:19Z","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 present a square root law for active sensing of phase $\\theta$ of a single pixel using optical probes that pass through a single-mode lossy thermal-noise bosonic channel. Specifically, we show that, when the sensor uses an $n$-mode covert optical probe, the mean squared error (MSE) of the resulting estimator $\\hat{\\theta}_n$ scales as $\\langle (\\theta-\\hat{\\theta}_n)^2\\rangle=\\mathcal{O}(1/\\sqrt{n})$; improving the scaling necessarily leads to detection by the adversary with high probability. We fully characterize this limit and show that it is achievable using laser light illumination and ","authors_text":"Animesh Datta, Boulat A. Bash, Christos N. Gagatsos, Saikat Guha","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-22T18:50:47Z","title":"Fundamental limits of quantum-secure covert optical sensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.06206","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":"sha256:2f603d3b41b126b5264b85df6be1c5724a3fce7b1e1614eb1c24551b5379b34b","target":"record","created_at":"2026-05-18T00:52:19Z","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":"d5c5f93ba8b4d76b488aeb54cb6f0660bbf5f13afdb073632921d6b397801bbf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-22T18:50:47Z","title_canon_sha256":"e984c33451760dc7579850074ace784954a85fdbcc652141cb74d7f4d843b7e9"},"schema_version":"1.0","source":{"id":"1701.06206","kind":"arxiv","version":1}},"canonical_sha256":"8debb029eaf103000a8affd4e0f9a6f118a9a5f9cdabadb5ce2eefefee50a4ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8debb029eaf103000a8affd4e0f9a6f118a9a5f9cdabadb5ce2eefefee50a4ae","first_computed_at":"2026-05-18T00:52:19.009693Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:19.009693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c0y6YFG+/514NLKcgwfcWqRShObmL2/bGfVQTPrjupMFKJbFIVLo+kPHdnDbGMUGp/eVPjQ7XMziLAodZp8LCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:19.010175Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.06206","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f603d3b41b126b5264b85df6be1c5724a3fce7b1e1614eb1c24551b5379b34b","sha256:07e2a670e21d00bc5fca117337765fab4cc98f50d767f29ac32c086580e53ecd"],"state_sha256":"c1073bb5d961eaa7dceeafa9216b609da6b884373ca95f543991ed3d2efa6197"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"302P/VOsZQytQ+7D+8ssvfM9f7HUctzBBMhMQwHYmHTmkM0JFcUhBB/O4RoVb+DEzW0KaoM4iuMfB19P6dQFBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T17:35:54.894421Z","bundle_sha256":"5377b47908ed57d686fdff24b3e3d337f5fdf58cd42c37b7cfe2f601aedab844"}}