Pith Number

pith:643ITGWX

pith:2013:643ITGWXZ3O2425ZYN34EDIILB

not attested not anchored not stored refs pending

Beyond spectral homodyne detection: complete quantum measurement of spectral modes of light

Alessandro S. Villar, Antonio S. Coelho, Claude Fabre, Felippe A. S. Barbosa, Katiuscia N. Cassemiro, Marcelo Martinelli, Paulo Nussenzveig

arxiv:1308.5650 v2 · 2013-08-26 · 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{643ITGWXZ3O2425ZYN34EDIILB}

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	2026-05-18T03:06:34.216762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f736899ad7ceddae6bb9c377c20d0858649fc311602fb592d79e5121d05ccd4d

Aliases

arxiv: 1308.5650 · arxiv_version: 1308.5650v2 · doi: 10.48550/arxiv.1308.5650 · pith_short_12: 643ITGWXZ3O2 · pith_short_16: 643ITGWXZ3O2425Z · pith_short_8: 643ITGWX

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/643ITGWXZ3O2425ZYN34EDIILB \
  | 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: f736899ad7ceddae6bb9c377c20d0858649fc311602fb592d79e5121d05ccd4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba8e45254a186326dbfc9acc282faa05256071e15d34dce894d33c78ba24a08c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-08-26T18:15:18Z",
    "title_canon_sha256": "06c9dc205da19ef8e698b7f3e67c32a404400cfcd6e8b3ed96c7aca247b5137c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.5650",
    "kind": "arxiv",
    "version": 2
  }
}