Pith Number

pith:6TFV7KS4

pith:2007:6TFV7KS4FH267JGSWVTH66BXET

not attested not anchored not stored refs pending

Quantum engineering of squeezed states for quantum communication and metrology

Henning Vahlbruch, Karsten Danzmann, Roman Schnabel, Simon Chelkowski

arxiv:0707.2845 v1 · 2007-07-19 · 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{6TFV7KS4FH267JGSWVTH66BXET}

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	2026-07-04T15:05:59.355693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4cb5faa5c29f5efa4d2b5667f783724e6547d1e97f3c00a5dfb5d9855ab6cb6

Aliases

arxiv: 0707.2845 · arxiv_version: 0707.2845v1 · doi: 10.48550/arxiv.0707.2845 · pith_short_12: 6TFV7KS4FH26 · pith_short_16: 6TFV7KS4FH267JGS · pith_short_8: 6TFV7KS4

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/6TFV7KS4FH267JGSWVTH66BXET \
  | 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: f4cb5faa5c29f5efa4d2b5667f783724e6547d1e97f3c00a5dfb5d9855ab6cb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e8f38447ac080a1f9048d4ca3eb0d4876e21548c17b667a23e2fdb336a0714c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-07-19T07:55:41Z",
    "title_canon_sha256": "8be157c4f76795514024041e78d7a40a34d1cb60c826682ca1f104d3c27ed34e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.2845",
    "kind": "arxiv",
    "version": 1
  }
}