Pith Number

pith:74DFEUQF

pith:2012:74DFEUQFAMWKF2QQNSWVRAT2D6

not attested not anchored not stored refs pending

Entanglement of Gaussian states and the applicability to quantum key distribution over fading channels

Bettina Heim, Christian Peuntinger, Christoffer Wittmann, Christoph Marquardt, Gerd Leuchs, Radim Filip, Vladyslav C. Usenko

arxiv:1208.4307 v2 · 2012-08-21 · 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{74DFEUQFAMWKF2QQNSWVRAT2D6}

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	2026-05-18T03:44:13.419477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff06525205032ca2ea106cad58827a1f898c8a9f0f4ef6feaf3fbda08da3d7a7

Aliases

arxiv: 1208.4307 · arxiv_version: 1208.4307v2 · doi: 10.48550/arxiv.1208.4307 · pith_short_12: 74DFEUQFAMWK · pith_short_16: 74DFEUQFAMWKF2QQ · pith_short_8: 74DFEUQF

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/74DFEUQFAMWKF2QQNSWVRAT2D6 \
  | 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: ff06525205032ca2ea106cad58827a1f898c8a9f0f4ef6feaf3fbda08da3d7a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20f50c80921247b15267d02d73b6c81cd7705a65f30614f766469e2f3a0405df",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-08-21T17:16:45Z",
    "title_canon_sha256": "94df3e6d9d8b745237884a505efdde91531b7c4eb9251935a903dbb1c0b4de96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4307",
    "kind": "arxiv",
    "version": 2
  }
}