Pith Number

pith:KTYFQPKC

pith:2009:KTYFQPKCNT7YIFQCFZKLAD5LBT

not attested not anchored not stored refs pending

Efficient optical quantum state engineering

Kevin T. McCusker, Paul G. Kwiat

arxiv:0907.1902 v1 · 2009-07-10 · 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{KTYFQPKCNT7YIFQCFZKLAD5LBT}

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	2026-05-18T03:19:57.173071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54f0583d426cff8416022e54b00fab0ceea5d7a97b470979f3c5e0c246d8b8c4

Aliases

arxiv: 0907.1902 · arxiv_version: 0907.1902v1 · doi: 10.48550/arxiv.0907.1902 · pith_short_12: KTYFQPKCNT7Y · pith_short_16: KTYFQPKCNT7YIFQC · pith_short_8: KTYFQPKC

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/KTYFQPKCNT7YIFQCFZKLAD5LBT \
  | 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: 54f0583d426cff8416022e54b00fab0ceea5d7a97b470979f3c5e0c246d8b8c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8d505dc73ddc60fa4dffc267d8de50b4d6fe320fb3187e57f84d0a2e850aed2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-07-10T20:37:32Z",
    "title_canon_sha256": "d4ab450e83cd5114e7e1691c3871a04f39f85d70862a7a97ca9542ddb909f8b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1902",
    "kind": "arxiv",
    "version": 1
  }
}