Pith Number

pith:FPM4UC2U

pith:2010:FPM4UC2UQSJSR7ZMSCLPVG5EYG

not attested not anchored not stored refs pending

Heralding two- and four-photon path entanglement on chip

Alberto Politi, Damien Bonneau, Jeremy L. O'Brien, Jonathan C. F. Matthews

arxiv:1005.5119 v2 · 2010-05-27 · quant-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FPM4UC2UQSJSR7ZMSCLPVG5EYG}

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	2026-05-18T04:10:36.022025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bd9ca0b54849328ff2c9096fa9ba4c19be6315efacc954432d11686fbc30d63

Aliases

arxiv: 1005.5119 · arxiv_version: 1005.5119v2 · doi: 10.48550/arxiv.1005.5119 · pith_short_12: FPM4UC2UQSJS · pith_short_16: FPM4UC2UQSJSR7ZM · pith_short_8: FPM4UC2U

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/FPM4UC2UQSJSR7ZMSCLPVG5EYG \
  | 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: 2bd9ca0b54849328ff2c9096fa9ba4c19be6315efacc954432d11686fbc30d63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86b43ed5e6ab1dbccb64bcf8b090cdb54f94550b0f122c651d71e0ba90b1c238",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-05-27T16:56:00Z",
    "title_canon_sha256": "587fe68905e0d8ec5f2cf728cd32f24f20bdfab1c7086d3e55a90ca0c63954ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.5119",
    "kind": "arxiv",
    "version": 2
  }
}