{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:WATMP2CAJFYRYJ2QS65SWGRB55","short_pith_number":"pith:WATMP2CA","canonical_record":{"source":{"id":"1711.09603","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T09:50:13Z","cross_cats_sorted":[],"title_canon_sha256":"c2d8bc72fb7aef2d5eda72ee6793f04b58df87e4a17bead16d43533bae50568c","abstract_canon_sha256":"fe80d75f6f9321126641c28b2dc406fb27faf85974072ec1d22269cc8e04a1f7"},"schema_version":"1.0"},"canonical_sha256":"b026c7e84049711c275097bb2b1a21ef7d77a69333fa5ff763e225fa5c72f3b7","source":{"kind":"arxiv","id":"1711.09603","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.09603","created_at":"2026-05-18T00:28:10Z"},{"alias_kind":"arxiv_version","alias_value":"1711.09603v2","created_at":"2026-05-18T00:28:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.09603","created_at":"2026-05-18T00:28:10Z"},{"alias_kind":"pith_short_12","alias_value":"WATMP2CAJFYR","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WATMP2CAJFYRYJ2Q","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WATMP2CA","created_at":"2026-05-18T12:31:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:WATMP2CAJFYRYJ2QS65SWGRB55","target":"record","payload":{"canonical_record":{"source":{"id":"1711.09603","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T09:50:13Z","cross_cats_sorted":[],"title_canon_sha256":"c2d8bc72fb7aef2d5eda72ee6793f04b58df87e4a17bead16d43533bae50568c","abstract_canon_sha256":"fe80d75f6f9321126641c28b2dc406fb27faf85974072ec1d22269cc8e04a1f7"},"schema_version":"1.0"},"canonical_sha256":"b026c7e84049711c275097bb2b1a21ef7d77a69333fa5ff763e225fa5c72f3b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:10.088670Z","signature_b64":"BP3Y4TB91qXhqNvPj0ExX7e2Bwwgm+Bb45ELWouQGrqXunXmOHutXDiOLkebl403A4T4InCQ4yrfazA47tM8Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b026c7e84049711c275097bb2b1a21ef7d77a69333fa5ff763e225fa5c72f3b7","last_reissued_at":"2026-05-18T00:28:10.087905Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:10.087905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.09603","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:28:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zTyg83InPNJsZezK/uyV8aBBUPolDmyu4KWc1CvSi8aO7z+wQFSueQJnfqq27RV5wjQ1CzcP9ofgbRHH8JHeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T03:09:21.238793Z"},"content_sha256":"9f0f58a6328722fa2a930ef3fe4899bf92896b14fcbd2ee4adef6f1da0d73a77","schema_version":"1.0","event_id":"sha256:9f0f58a6328722fa2a930ef3fe4899bf92896b14fcbd2ee4adef6f1da0d73a77"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:WATMP2CAJFYRYJ2QS65SWGRB55","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Continuous-variable quantum key distribution with a leakage from state preparation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ivan Derkach, Radim Filip, Vladyslav C. Usenko","submitted_at":"2017-11-27T09:50:13Z","abstract_excerpt":"We address side-channel leakage in a trusted preparation station of continuous-variable quantum key distribution with coherent and squeezed states. We consider two different scenaria: multimode Gaussian modulation, directly accessible to an eavesdropper, or side-channel loss of the signal states prior to the modulation stage. We show the negative impact of excessive modulation on both the coherent- and squeezed-state protocols. The impact is more pronounced for squeezed-state protocols and may require optimization of squeezing in the case of noisy quantum channels. Further, we demonstrate that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.09603","kind":"arxiv","version":2},"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":"2026-05-18T00:28:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nRInWH0sDtfqImS4e58rZu+teSqmDfoMjlrUmJkzShEGnAfphOtGN89U6W7ZeSr0GIYfwbSzKBVcPkGadsS7AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T03:09:21.239169Z"},"content_sha256":"c2665bf84c8f0bf02b8e5672d26b052076000aa4542d2641b33c8f7838e35892","schema_version":"1.0","event_id":"sha256:c2665bf84c8f0bf02b8e5672d26b052076000aa4542d2641b33c8f7838e35892"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WATMP2CAJFYRYJ2QS65SWGRB55/bundle.json","state_url":"https://pith.science/pith/WATMP2CAJFYRYJ2QS65SWGRB55/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WATMP2CAJFYRYJ2QS65SWGRB55/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":"2026-06-02T03:09:21Z","links":{"resolver":"https://pith.science/pith/WATMP2CAJFYRYJ2QS65SWGRB55","bundle":"https://pith.science/pith/WATMP2CAJFYRYJ2QS65SWGRB55/bundle.json","state":"https://pith.science/pith/WATMP2CAJFYRYJ2QS65SWGRB55/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WATMP2CAJFYRYJ2QS65SWGRB55/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WATMP2CAJFYRYJ2QS65SWGRB55","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":"fe80d75f6f9321126641c28b2dc406fb27faf85974072ec1d22269cc8e04a1f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T09:50:13Z","title_canon_sha256":"c2d8bc72fb7aef2d5eda72ee6793f04b58df87e4a17bead16d43533bae50568c"},"schema_version":"1.0","source":{"id":"1711.09603","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.09603","created_at":"2026-05-18T00:28:10Z"},{"alias_kind":"arxiv_version","alias_value":"1711.09603v2","created_at":"2026-05-18T00:28:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.09603","created_at":"2026-05-18T00:28:10Z"},{"alias_kind":"pith_short_12","alias_value":"WATMP2CAJFYR","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WATMP2CAJFYRYJ2Q","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WATMP2CA","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:c2665bf84c8f0bf02b8e5672d26b052076000aa4542d2641b33c8f7838e35892","target":"graph","created_at":"2026-05-18T00:28:10Z","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 address side-channel leakage in a trusted preparation station of continuous-variable quantum key distribution with coherent and squeezed states. We consider two different scenaria: multimode Gaussian modulation, directly accessible to an eavesdropper, or side-channel loss of the signal states prior to the modulation stage. We show the negative impact of excessive modulation on both the coherent- and squeezed-state protocols. The impact is more pronounced for squeezed-state protocols and may require optimization of squeezing in the case of noisy quantum channels. Further, we demonstrate that","authors_text":"Ivan Derkach, Radim Filip, Vladyslav C. Usenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T09:50:13Z","title":"Continuous-variable quantum key distribution with a leakage from state preparation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.09603","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":"sha256:9f0f58a6328722fa2a930ef3fe4899bf92896b14fcbd2ee4adef6f1da0d73a77","target":"record","created_at":"2026-05-18T00:28:10Z","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":"fe80d75f6f9321126641c28b2dc406fb27faf85974072ec1d22269cc8e04a1f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T09:50:13Z","title_canon_sha256":"c2d8bc72fb7aef2d5eda72ee6793f04b58df87e4a17bead16d43533bae50568c"},"schema_version":"1.0","source":{"id":"1711.09603","kind":"arxiv","version":2}},"canonical_sha256":"b026c7e84049711c275097bb2b1a21ef7d77a69333fa5ff763e225fa5c72f3b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b026c7e84049711c275097bb2b1a21ef7d77a69333fa5ff763e225fa5c72f3b7","first_computed_at":"2026-05-18T00:28:10.087905Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:10.087905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BP3Y4TB91qXhqNvPj0ExX7e2Bwwgm+Bb45ELWouQGrqXunXmOHutXDiOLkebl403A4T4InCQ4yrfazA47tM8Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:10.088670Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.09603","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f0f58a6328722fa2a930ef3fe4899bf92896b14fcbd2ee4adef6f1da0d73a77","sha256:c2665bf84c8f0bf02b8e5672d26b052076000aa4542d2641b33c8f7838e35892"],"state_sha256":"b5bd02c9225b60da1e38148447dbef566c32f599b65769184babfeeab6a91330"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u7HTTKrzuHPTH0Eo6upMVGA1GnImVd6letLX6A3obHwWqctioaZmFT79NlYLcV1JKgvquJglRtxuRdUDUEacBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T03:09:21.241204Z","bundle_sha256":"8b957e704c55d8ef0b2979267807af5782abd99978fd54531958b7ccf4ee3cbb"}}