{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DB6MY423R3C66HPNOEU3ZC4SZQ","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":"adea3ae183693d8bb67a2e43ce257d804410f3d4cd46917604e17257cb68cda6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-20T14:24:00Z","title_canon_sha256":"08c78ecfeff3fd78d44d55df60a8776e517c5fe0009727aaad79b497b0bb35e1"},"schema_version":"1.0","source":{"id":"1808.06471","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.06471","created_at":"2026-05-18T00:07:44Z"},{"alias_kind":"arxiv_version","alias_value":"1808.06471v1","created_at":"2026-05-18T00:07:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.06471","created_at":"2026-05-18T00:07:44Z"},{"alias_kind":"pith_short_12","alias_value":"DB6MY423R3C6","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DB6MY423R3C66HPN","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DB6MY423","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:f90b8a88eef02ce54e64962df3fe5b0f381aa109680b7bd2313822c93a91cf22","target":"graph","created_at":"2026-05-18T00:07:44Z","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 quantum key distribution (QKD) protocol based on long lived coherent states prepared on superconducting rings with a mesoscopic Josephson junction (dc-SQUIDs). This enables storage of the prepared states for long durations before actually performing the key distribution. Our on-demand QKD protocol is closely related to the coherent state based continuous variable quantum key distribution protocol. A detailed analysis of preparation, evolution and different measurement schemes that are required to be implemented on dc-SQUIDs to carry out the QKD is provided. We present two variants","authors_text":"Arvind, Chandan Kumar, Jaskaran Singh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-20T14:24:00Z","title":"On-demand quantum key distribution using superconducting rings with a mesoscopic Josephson junction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.06471","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":"sha256:08e1df747e6b549a44e891157b4cfa7fbf31c605df75940485fc561b7ed3851b","target":"record","created_at":"2026-05-18T00:07:44Z","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":"adea3ae183693d8bb67a2e43ce257d804410f3d4cd46917604e17257cb68cda6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-20T14:24:00Z","title_canon_sha256":"08c78ecfeff3fd78d44d55df60a8776e517c5fe0009727aaad79b497b0bb35e1"},"schema_version":"1.0","source":{"id":"1808.06471","kind":"arxiv","version":1}},"canonical_sha256":"187ccc735b8ec5ef1ded7129bc8b92cc296da2741fe347431b771af16abb081a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"187ccc735b8ec5ef1ded7129bc8b92cc296da2741fe347431b771af16abb081a","first_computed_at":"2026-05-18T00:07:44.797107Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:44.797107Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E4/zJFO/ZtVNZi8tKWEx1zPXbBceJCg1acvJwR94JTBPS6rdQreyCZaVS2yYWcR7nxdfmApUmUoqv9jliIeEBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:44.797825Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.06471","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08e1df747e6b549a44e891157b4cfa7fbf31c605df75940485fc561b7ed3851b","sha256:f90b8a88eef02ce54e64962df3fe5b0f381aa109680b7bd2313822c93a91cf22"],"state_sha256":"25377f48ec366281cd40f160aa105018348a75106a3d0ec117d31933486ebb78"}