Pith Number

pith:56KBFNAO

pith:2013:56KBFNAONL75Z7KALKO7ULP4QD

not attested not anchored not stored refs pending

Efficient Amplification of Photonic Qubits by Optimal Quantum Cloning

Anton\'in \v{C}ernoch, Jan Soubusta, Karel Lemr, Karol Bartkiewicz, Magdalena Stobi\'nska

arxiv:1310.1768 v5 · 2013-10-07 · 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{56KBFNAONL75Z7KALKO7ULP4QD}

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	2026-05-18T02:49:28.786279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef9412b40e6affdcfd405a9dfa2dfc80caaff5cdd7f53e8c174815f4d4cf3f09

Aliases

arxiv: 1310.1768 · arxiv_version: 1310.1768v5 · doi: 10.48550/arxiv.1310.1768 · pith_short_12: 56KBFNAONL75 · pith_short_16: 56KBFNAONL75Z7KA · pith_short_8: 56KBFNAO

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/56KBFNAONL75Z7KALKO7ULP4QD \
  | 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: ef9412b40e6affdcfd405a9dfa2dfc80caaff5cdd7f53e8c174815f4d4cf3f09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4f4d5987a3d166dd37edf6d9048476ac926790ca046d9cd89bcb861c334455d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-10-07T13:04:21Z",
    "title_canon_sha256": "36381a7e9d486b44a5c8fe52df5b948802e59a383e95d8082646a90f38f402d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1768",
    "kind": "arxiv",
    "version": 5
  }
}