{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:UESA5OG4WHXPZNPBWNTJZWNOJ4","short_pith_number":"pith:UESA5OG4","canonical_record":{"source":{"id":"1103.4185","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-22T01:32:32Z","cross_cats_sorted":[],"title_canon_sha256":"55a30b4d58a45cc7d6f6ec99f5d9ee647ab3c57e8df34a967235691ead83900f","abstract_canon_sha256":"739a8d7d6b5568a0ff038b2655d0c03f22362c0a91cc3f5c9bce798cfa49d89b"},"schema_version":"1.0"},"canonical_sha256":"a1240eb8dcb1eefcb5e1b3669cd9ae4f1ccad94e20f9859173c6316e6e287f21","source":{"kind":"arxiv","id":"1103.4185","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.4185","created_at":"2026-05-18T01:03:24Z"},{"alias_kind":"arxiv_version","alias_value":"1103.4185v1","created_at":"2026-05-18T01:03:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.4185","created_at":"2026-05-18T01:03:24Z"},{"alias_kind":"pith_short_12","alias_value":"UESA5OG4WHXP","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UESA5OG4WHXPZNPB","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UESA5OG4","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:UESA5OG4WHXPZNPBWNTJZWNOJ4","target":"record","payload":{"canonical_record":{"source":{"id":"1103.4185","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-22T01:32:32Z","cross_cats_sorted":[],"title_canon_sha256":"55a30b4d58a45cc7d6f6ec99f5d9ee647ab3c57e8df34a967235691ead83900f","abstract_canon_sha256":"739a8d7d6b5568a0ff038b2655d0c03f22362c0a91cc3f5c9bce798cfa49d89b"},"schema_version":"1.0"},"canonical_sha256":"a1240eb8dcb1eefcb5e1b3669cd9ae4f1ccad94e20f9859173c6316e6e287f21","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:03:24.702982Z","signature_b64":"G68Bk5m33SHSiqdhxHCZ8fikSNMjBf6mg9nXFKAJMJgOF2uhdZP+Cn8RtBBLsc7VbpQ0RdbVindv9/UE551nCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1240eb8dcb1eefcb5e1b3669cd9ae4f1ccad94e20f9859173c6316e6e287f21","last_reissued_at":"2026-05-18T01:03:24.702527Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:03:24.702527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.4185","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":"2026-05-18T01:03:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JbhzwBTZxzYRAog0s+Wd+1bd+cAo9I9iGQ8txUoKLEzo9EEwS4nDIVFyIRmPYrCI4dyBoPbxtVrjvT9AdsCiCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:07:29.191124Z"},"content_sha256":"93404cc128b85352b64c6f9ebf1c1fe8f762a0df10ecb64f82de970ab4c73f12","schema_version":"1.0","event_id":"sha256:93404cc128b85352b64c6f9ebf1c1fe8f762a0df10ecb64f82de970ab4c73f12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:UESA5OG4WHXPZNPBWNTJZWNOJ4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discrete Time Quantum Walk Approach to State Transfer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Antoni Wojcik, Pawel Kurzynski","submitted_at":"2011-03-22T01:32:32Z","abstract_excerpt":"We show that a quantum state transfer, previously studied as a continuous time process in networks of interacting spins, can be achieved within the model of discrete time quantum walks with position dependent coin. We argue that due to additional degrees of freedom, discrete time quantum walks allow to observe effects which cannot be observed in the corresponding continuous time case. First, we study a discrete time version of the engineered coupling protocol due to Christandl et. al. [Phys. Rev. Lett. 92, 187902 (2004)] and then discuss the general idea of conversion between continuous time q"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.4185","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":"2026-05-18T01:03:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kWVArkx71rGn10UeSq+4mwhNAM0WrkdkIc2Up2RGzbeGYEHfR1wjcsW9fZILVdANxiZ+D3ehywW5PmRhh9xxAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:07:29.191542Z"},"content_sha256":"404f72f2393df733502f70bfbdafa1798702e95cc74c801e5612a408b6ad81f0","schema_version":"1.0","event_id":"sha256:404f72f2393df733502f70bfbdafa1798702e95cc74c801e5612a408b6ad81f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UESA5OG4WHXPZNPBWNTJZWNOJ4/bundle.json","state_url":"https://pith.science/pith/UESA5OG4WHXPZNPBWNTJZWNOJ4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UESA5OG4WHXPZNPBWNTJZWNOJ4/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":"2026-05-27T08:07:29Z","links":{"resolver":"https://pith.science/pith/UESA5OG4WHXPZNPBWNTJZWNOJ4","bundle":"https://pith.science/pith/UESA5OG4WHXPZNPBWNTJZWNOJ4/bundle.json","state":"https://pith.science/pith/UESA5OG4WHXPZNPBWNTJZWNOJ4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UESA5OG4WHXPZNPBWNTJZWNOJ4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:UESA5OG4WHXPZNPBWNTJZWNOJ4","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":"739a8d7d6b5568a0ff038b2655d0c03f22362c0a91cc3f5c9bce798cfa49d89b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-22T01:32:32Z","title_canon_sha256":"55a30b4d58a45cc7d6f6ec99f5d9ee647ab3c57e8df34a967235691ead83900f"},"schema_version":"1.0","source":{"id":"1103.4185","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.4185","created_at":"2026-05-18T01:03:24Z"},{"alias_kind":"arxiv_version","alias_value":"1103.4185v1","created_at":"2026-05-18T01:03:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.4185","created_at":"2026-05-18T01:03:24Z"},{"alias_kind":"pith_short_12","alias_value":"UESA5OG4WHXP","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UESA5OG4WHXPZNPB","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UESA5OG4","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:404f72f2393df733502f70bfbdafa1798702e95cc74c801e5612a408b6ad81f0","target":"graph","created_at":"2026-05-18T01:03:24Z","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 show that a quantum state transfer, previously studied as a continuous time process in networks of interacting spins, can be achieved within the model of discrete time quantum walks with position dependent coin. We argue that due to additional degrees of freedom, discrete time quantum walks allow to observe effects which cannot be observed in the corresponding continuous time case. First, we study a discrete time version of the engineered coupling protocol due to Christandl et. al. [Phys. Rev. Lett. 92, 187902 (2004)] and then discuss the general idea of conversion between continuous time q","authors_text":"Antoni Wojcik, Pawel Kurzynski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-22T01:32:32Z","title":"Discrete Time Quantum Walk Approach to State Transfer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.4185","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":"sha256:93404cc128b85352b64c6f9ebf1c1fe8f762a0df10ecb64f82de970ab4c73f12","target":"record","created_at":"2026-05-18T01:03:24Z","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":"739a8d7d6b5568a0ff038b2655d0c03f22362c0a91cc3f5c9bce798cfa49d89b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-22T01:32:32Z","title_canon_sha256":"55a30b4d58a45cc7d6f6ec99f5d9ee647ab3c57e8df34a967235691ead83900f"},"schema_version":"1.0","source":{"id":"1103.4185","kind":"arxiv","version":1}},"canonical_sha256":"a1240eb8dcb1eefcb5e1b3669cd9ae4f1ccad94e20f9859173c6316e6e287f21","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1240eb8dcb1eefcb5e1b3669cd9ae4f1ccad94e20f9859173c6316e6e287f21","first_computed_at":"2026-05-18T01:03:24.702527Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:03:24.702527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G68Bk5m33SHSiqdhxHCZ8fikSNMjBf6mg9nXFKAJMJgOF2uhdZP+Cn8RtBBLsc7VbpQ0RdbVindv9/UE551nCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:03:24.702982Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.4185","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93404cc128b85352b64c6f9ebf1c1fe8f762a0df10ecb64f82de970ab4c73f12","sha256:404f72f2393df733502f70bfbdafa1798702e95cc74c801e5612a408b6ad81f0"],"state_sha256":"add729e0e4cd83ce6d297bee26e33c4a63190e1cc7ed8978f97a166a3c1910f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pgl1YmHXQX/hN8xaJhMSXWp1+PM9+LvXizDaCOdgn299IluoL6tQimHtGAXN52L4N/4bXmt/RLsrA8atewptBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T08:07:29.194937Z","bundle_sha256":"b1b8c6185f2d7714bbb0857d4561fd15d7315c9de626dbd7e5bdde6ba643c40d"}}