Pith Number

pith:DJXG6CIN

pith:2009:DJXG6CINX3NIMNB3HIDHBSH6QJ

not attested not anchored not stored refs pending

Quantum Metrology with Two-Mode Squeezed Vacuum: Parity Detection Beats the Heisenberg Limit

Aravind Chiruvelli, Gretchen M. Raterman, Hwang Lee, Jonathan P. Dowling, Petr M. Anisimov, Sean D. Huver, William N. Plick

arxiv:0910.5942 v1 · 2009-10-30 · 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{DJXG6CINX3NIMNB3HIDHBSH6QJ}

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	2026-05-18T03:23:57.023776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a6e6f090dbeda86343b3a0670c8fe826086b8c0cd9edeacf939288e79d4ef27

Aliases

arxiv: 0910.5942 · arxiv_version: 0910.5942v1 · doi: 10.48550/arxiv.0910.5942 · pith_short_12: DJXG6CINX3NI · pith_short_16: DJXG6CINX3NIMNB3 · pith_short_8: DJXG6CIN

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/DJXG6CINX3NIMNB3HIDHBSH6QJ \
  | 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: 1a6e6f090dbeda86343b3a0670c8fe826086b8c0cd9edeacf939288e79d4ef27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da860c87b04e90e359650930285b882406ccd7c973db06e35fed132a8c448ff8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-10-30T18:52:03Z",
    "title_canon_sha256": "90212aa3c282910764f7543b338ff8354e3b9e0815ee9b2fbb0e16e5a0c035e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5942",
    "kind": "arxiv",
    "version": 1
  }
}