Pith Number

pith:KTW3T5GJ

pith:2025:KTW3T5GJKFLMLMHL4ZQPGHM2LR

not attested not anchored not stored refs pending

Thin-film Al0.30Ga0.70As (111) as a flat source of high-purity orthogonally polarized entangled photons

Maria Chekhova, Mikhail A. Belkin, Qingyu Shi, Simon Stich, Trevor Blakie, Vitaliy Sultanov, Zbig Wasiliewski

arxiv:2509.03978 v1 · 2025-09-04 · physics.optics · 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{KTW3T5GJKFLMLMHL4ZQPGHM2LR}

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	2026-07-05T12:04:50.981750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54edb9f4c95156c5b0ebe660f31d9a5c4b1c86e8e803e31046e5663b4e16012c

Aliases

arxiv: 2509.03978 · arxiv_version: 2509.03978v1 · doi: 10.48550/arxiv.2509.03978 · pith_short_12: KTW3T5GJKFLM · pith_short_16: KTW3T5GJKFLMLMHL · pith_short_8: KTW3T5GJ

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/KTW3T5GJKFLMLMHL4ZQPGHM2LR \
  | 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: 54edb9f4c95156c5b0ebe660f31d9a5c4b1c86e8e803e31046e5663b4e16012c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91759870cee636b05ec36e24c9c2da7db208dd70d5d693524cde10062bdc559d",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-09-04T08:06:41Z",
    "title_canon_sha256": "84fa7147394f61274114fe97e16cc3d43926df6df2664d820738727e4edf554c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.03978",
    "kind": "arxiv",
    "version": 1
  }
}