Pith Number

pith:NS4VTG3L

pith:2013:NS4VTG3LA35NT4M3H6656WNTYH

not attested not anchored not stored refs pending

Purifying entanglement of noisy two-qubit states via entanglement swapping

Ming Yang, Wei Song, Zhuo-Liang Cao

arxiv:1306.4451 v4 · 2013-06-19 · 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{NS4VTG3LA35NT4M3H6656WNTYH}

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	2026-05-18T03:01:33.366817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cb9599b6b06fad9f19b3fbddf59b3c1eeb844ad3722e82e0955291b35c4eedb

Aliases

arxiv: 1306.4451 · arxiv_version: 1306.4451v4 · doi: 10.48550/arxiv.1306.4451 · pith_short_12: NS4VTG3LA35N · pith_short_16: NS4VTG3LA35NT4M3 · pith_short_8: NS4VTG3L

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/NS4VTG3LA35NT4M3H6656WNTYH \
  | 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: 6cb9599b6b06fad9f19b3fbddf59b3c1eeb844ad3722e82e0955291b35c4eedb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f79bb5c641b80d49d2b674b5e9c1fa4ed13353c5356860a43c7f127c41ab49bf",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-06-19T08:37:12Z",
    "title_canon_sha256": "38e9d40e9d0fbbee77fc6a5c4bb536d87080bbbb9838eba0763644cab643ee9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4451",
    "kind": "arxiv",
    "version": 4
  }
}