Pith Number

pith:C2KWR67L

pith:2020:C2KWR67LTBJOX56KNXP34OQIXM

not attested not anchored not stored refs pending

Measurement of entropy and quantum coherence properties of two type-I entangled photonic qubits

Ali Motazedifard, N. S. Vayaghan, Seyed Ahmad Madani

arxiv:2012.02658 v2 · 2020-12-04 · 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{C2KWR67LTBJOX56KNXP34OQIXM}

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	2026-07-05T02:54:52.489727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

169568fbeb9852ebf7ca6ddfbe3a08bb2ef22f673997ddef76097a3b1d621c79

Aliases

arxiv: 2012.02658 · arxiv_version: 2012.02658v2 · doi: 10.48550/arxiv.2012.02658 · pith_short_12: C2KWR67LTBJO · pith_short_16: C2KWR67LTBJOX56K · pith_short_8: C2KWR67L

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/C2KWR67LTBJOX56KNXP34OQIXM \
  | 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: 169568fbeb9852ebf7ca6ddfbe3a08bb2ef22f673997ddef76097a3b1d621c79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef7c038614fcb18650f7dde97dedd96359b1ed9f27dd68b38c97eccaa6d8d6a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-12-04T15:34:02Z",
    "title_canon_sha256": "b42809a81e4911386434bf1aeb5686116737e7ac6f25b42060de6ed21e679324"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.02658",
    "kind": "arxiv",
    "version": 2
  }
}