{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:MFEC6H5ZR3PHQRHYICF4G2M3JH","short_pith_number":"pith:MFEC6H5Z","schema_version":"1.0","canonical_sha256":"61482f1fb98ede7844f8408bc3699b49d039852345ce067c1da994bb2e9b7471","source":{"kind":"arxiv","id":"0803.3139","version":1},"attestation_state":"computed","paper":{"title":"Qubits from tight knots and bent nano-bars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Rossen Dandoloff, Victor Atanasov","submitted_at":"2008-03-21T10:36:51Z","abstract_excerpt":"We propose a novel mechanism for creating a qubit based on a tight knot, that is a nano-quantum wire system so small and so cold as to be quantum coherent with respect to curvature-induced effects. To establish tight knots as legitimate candidates for qubits, we propose an effective curvature-induced potential that produces the two-level system and identify the tunnel coupling between the two local states. We propose also a different design of nano-mechanical qubit based on twisted nano-rods. We describe how both devices can be manipulated. Also we outline possible decoherence channels, detect"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0803.3139","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-03-21T10:36:51Z","cross_cats_sorted":[],"title_canon_sha256":"8989a5f31a078f4c70ad675ccf2a234def07d6260cf8aa43e2950c01ae4e8506","abstract_canon_sha256":"087a3681c3c7a90c1a3eb8fa24a36e27b86dbcb7fdacb6ec2b4441d0118c35ad"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:29.165663Z","signature_b64":"4INekNzFAULL3rCLVfRRllMUtyPMrXORVyOXcJmXOgWb8nC8lrDEptwSBZdVOMH7LOLdDw+K9p61ogn3F4YhAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61482f1fb98ede7844f8408bc3699b49d039852345ce067c1da994bb2e9b7471","last_reissued_at":"2026-05-18T00:48:29.164986Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:29.164986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Qubits from tight knots and bent nano-bars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Rossen Dandoloff, Victor Atanasov","submitted_at":"2008-03-21T10:36:51Z","abstract_excerpt":"We propose a novel mechanism for creating a qubit based on a tight knot, that is a nano-quantum wire system so small and so cold as to be quantum coherent with respect to curvature-induced effects. To establish tight knots as legitimate candidates for qubits, we propose an effective curvature-induced potential that produces the two-level system and identify the tunnel coupling between the two local states. We propose also a different design of nano-mechanical qubit based on twisted nano-rods. We describe how both devices can be manipulated. Also we outline possible decoherence channels, detect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0803.3139","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0803.3139","created_at":"2026-05-18T00:48:29.165103+00:00"},{"alias_kind":"arxiv_version","alias_value":"0803.3139v1","created_at":"2026-05-18T00:48:29.165103+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0803.3139","created_at":"2026-05-18T00:48:29.165103+00:00"},{"alias_kind":"pith_short_12","alias_value":"MFEC6H5ZR3PH","created_at":"2026-05-18T12:25:57.157939+00:00"},{"alias_kind":"pith_short_16","alias_value":"MFEC6H5ZR3PHQRHY","created_at":"2026-05-18T12:25:57.157939+00:00"},{"alias_kind":"pith_short_8","alias_value":"MFEC6H5Z","created_at":"2026-05-18T12:25:57.157939+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH","json":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH.json","graph_json":"https://pith.science/api/pith-number/MFEC6H5ZR3PHQRHYICF4G2M3JH/graph.json","events_json":"https://pith.science/api/pith-number/MFEC6H5ZR3PHQRHYICF4G2M3JH/events.json","paper":"https://pith.science/paper/MFEC6H5Z"},"agent_actions":{"view_html":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH","download_json":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH.json","view_paper":"https://pith.science/paper/MFEC6H5Z","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0803.3139&json=true","fetch_graph":"https://pith.science/api/pith-number/MFEC6H5ZR3PHQRHYICF4G2M3JH/graph.json","fetch_events":"https://pith.science/api/pith-number/MFEC6H5ZR3PHQRHYICF4G2M3JH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH/action/storage_attestation","attest_author":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH/action/author_attestation","sign_citation":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH/action/citation_signature","submit_replication":"https://pith.science/pith/MFEC6H5ZR3PHQRHYICF4G2M3JH/action/replication_record"}},"created_at":"2026-05-18T00:48:29.165103+00:00","updated_at":"2026-05-18T00:48:29.165103+00:00"}