Pith Number

pith:VY6RQNG2

pith:2002:VY6RQNG2QYNI66SA2ZMLWKI7EZ

not attested not anchored not stored refs pending

Purification and detection of entangled coherent states

D.-G. Welsch, J. Clausen, L. Knoell

arxiv:quant-ph/0203144 v1 · 2002-03-29 · 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{VY6RQNG2QYNI66SA2ZMLWKI7EZ}

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	2026-05-18T01:16:22.025923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae3d1834da861a8f7a40d658bb291f264eee301594ebde4bbde9b86c2282f7b1

Aliases

arxiv: quant-ph/0203144 · arxiv_version: quant-ph/0203144v1 · doi: 10.48550/arxiv.quant-ph/0203144 · pith_short_12: VY6RQNG2QYNI · pith_short_16: VY6RQNG2QYNI66SA · pith_short_8: VY6RQNG2

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/VY6RQNG2QYNI66SA2ZMLWKI7EZ \
  | 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: ae3d1834da861a8f7a40d658bb291f264eee301594ebde4bbde9b86c2282f7b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d165544feebd25dfb6e886c6507b7c796b914122cb5ec74688cfd27c35c5fded",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-03-29T01:34:21Z",
    "title_canon_sha256": "a8a4b53378ce8b5c9f366e3c895c7c828670f8f78cd623293300b723e6826efe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0203144",
    "kind": "arxiv",
    "version": 1
  }
}