Pith Number

pith:DWY67HTF

pith:2004:DWY67HTFLCDUKA5ZDTTGBADJSX

not attested not anchored not stored refs pending

Optimal feedback control for the rapid preparation of a single qubit

Kurt Jacobs

arxiv:quant-ph/0410018 v2 · 2004-10-03 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DWY67HTFLCDUKA5ZDTTGBADJSX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:03:42.105300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1db1ef9e6558874503b91ce660806995dadb742b03fcbb2f13703b6e3a6c41f0

Aliases

arxiv: quant-ph/0410018 · arxiv_version: quant-ph/0410018v2 · doi: 10.48550/arxiv.quant-ph/0410018 · pith_short_12: DWY67HTFLCDU · pith_short_16: DWY67HTFLCDUKA5Z · pith_short_8: DWY67HTF

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/DWY67HTFLCDUKA5ZDTTGBADJSX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1db1ef9e6558874503b91ce660806995dadb742b03fcbb2f13703b6e3a6c41f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "906c99789941d49b14ea60036c9f6d165a82f8c0bdb6ad37bc5c6ca50ba80a65",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-10-03T14:02:12Z",
    "title_canon_sha256": "a5410942eada7ffb1193388ba77d308848f1531d9fc5aa819dd1ef49090f5ef1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0410018",
    "kind": "arxiv",
    "version": 2
  }
}