Pith Number

pith:BKG6UJSA

pith:2013:BKG6UJSAR7KSHHIWPXS4LZBVF6

not attested not anchored not stored refs pending

Noiseless amplification of weak coherent fields without external energy

Jani Oksanen, Jukka Tulkki, Mikko Partanen, Teppo H\"ayrynen

arxiv:1309.4443 v2 · 2013-09-17 · 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{BKG6UJSAR7KSHHIWPXS4LZBVF6}

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	2026-05-18T03:04:23.902209Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a8dea26408fd5239d167de5c5e4352f8b5cbc3c7b3bc472480c7d1dd2c21bd4

Aliases

arxiv: 1309.4443 · arxiv_version: 1309.4443v2 · doi: 10.48550/arxiv.1309.4443 · pith_short_12: BKG6UJSAR7KS · pith_short_16: BKG6UJSAR7KSHHIW · pith_short_8: BKG6UJSA

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/BKG6UJSAR7KSHHIWPXS4LZBVF6 \
  | 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: 0a8dea26408fd5239d167de5c5e4352f8b5cbc3c7b3bc472480c7d1dd2c21bd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "485ee18a99bfe5fa9917243b195a101eea44843b7682c135a597f2b012252b45",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-09-17T13:09:27Z",
    "title_canon_sha256": "52db5634ce7218982221456339f12c3505ff53c0e45f326428a3b33343a9641d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4443",
    "kind": "arxiv",
    "version": 2
  }
}