Pith Number

pith:FS6UIQPO

pith:2009:FS6UIQPODPRGYPJQOBUDKNL3PE

not attested not anchored not stored refs pending

Not all pure entangled states are useful for sub shot-noise interferometry

Augusto Smerzi, Otfried G\"uhne, Philipp Hyllus

arxiv:0912.4349 v2 · 2009-12-22 · quant-ph · cond-mat.quant-gas

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FS6UIQPODPRGYPJQOBUDKNL3PE}

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	2026-05-18T02:10:14.729997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cbd4441ee1be26c3d30706835357b793f7208d5a18773b952439675ae15b143

Aliases

arxiv: 0912.4349 · arxiv_version: 0912.4349v2 · doi: 10.48550/arxiv.0912.4349 · pith_short_12: FS6UIQPODPRG · pith_short_16: FS6UIQPODPRGYPJQ · pith_short_8: FS6UIQPO

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/FS6UIQPODPRGYPJQOBUDKNL3PE \
  | 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: 2cbd4441ee1be26c3d30706835357b793f7208d5a18773b952439675ae15b143

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e64a1244474dbadfb7cfe2b0bb2a0a1718dfc45520c932db02799e023f508bb1",
    "cross_cats_sorted": [
      "cond-mat.quant-gas"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-12-22T09:53:05Z",
    "title_canon_sha256": "86b0a4b9dbe8b85ce71c6bd66b5cf07d57876d9a827d4f81ddfced088908ec4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4349",
    "kind": "arxiv",
    "version": 2
  }
}