Pith Number

pith:BEJZRDOQ

pith:2025:BEJZRDOQZJC46YXZFWWWJOPWS7

not attested not anchored not stored refs pending

Observation of quantum entanglement between free electrons and photons

Claus Ropers, Hao Jeng, Jan-Wilke Henke, Murat Sivis

arxiv:2504.13047 v1 · 2025-04-17 · 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{BEJZRDOQZJC46YXZFWWWJOPWS7}

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.

Cited by

3 papers in Pith

Quantum tomography of free electrons

Electron-Photon Spatial Entanglement in Coherent Cathodoluminescence

Heralded Generation of Multipartite Free-Electron W-State Entanglement

Receipt and verification

First computed	2026-07-05T10:50:36.728829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0913988dd0ca45cf62f92dad64b9f697c857e5aee9fc9ea8a6de34e549d26dbb

Aliases

arxiv: 2504.13047 · arxiv_version: 2504.13047v1 · doi: 10.48550/arxiv.2504.13047 · pith_short_12: BEJZRDOQZJC4 · pith_short_16: BEJZRDOQZJC46YXZ · pith_short_8: BEJZRDOQ

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/BEJZRDOQZJC46YXZFWWWJOPWS7 \
  | 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: 0913988dd0ca45cf62f92dad64b9f697c857e5aee9fc9ea8a6de34e549d26dbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc896a03305ed20a9b8a444d07dd7a3644cf02e642358776a81f2f09593956f7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-04-17T16:03:05Z",
    "title_canon_sha256": "b353db895ca213c5d0edacef6c9bbb0650654f16d6e2b6ca4b4ffc0152bd144c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.13047",
    "kind": "arxiv",
    "version": 1
  }
}