Pith Number

pith:7IOW2R7D

pith:2007:7IOW2R7D3Y7ZHNVCXA5YJ7LSVD

not attested not anchored not stored refs pending

Demonstration of deterministic and high fidelity squeezing of quantum information

Akira Furusawa, Alexander Huck, Jun-ichi Yoshikawa, Nobuyuki Takei, Takayuki Akiyama, Toshiki Hayashi, Ulrik L. Andersen

arxiv:quant-ph/0702049 v2 · 2007-02-06 · 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{7IOW2R7D3Y7ZHNVCXA5YJ7LSVD}

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	2026-07-04T17:08:42.563049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa1d6d47e3de3f93b6a2b83b84fd72a8ff5204d81887451c4a7a53a48dc1f4aa

Aliases

arxiv: quant-ph/0702049 · arxiv_version: quant-ph/0702049v2 · doi: 10.48550/arxiv.quant-ph/0702049 · pith_short_12: 7IOW2R7D3Y7Z · pith_short_16: 7IOW2R7D3Y7ZHNVC · pith_short_8: 7IOW2R7D

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/7IOW2R7D3Y7ZHNVCXA5YJ7LSVD \
  | 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: fa1d6d47e3de3f93b6a2b83b84fd72a8ff5204d81887451c4a7a53a48dc1f4aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ffbb77c63cfa3ed935d1e561941a989a33b9e9c85698608eaf7fa87cbcd51b7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-02-06T07:26:11Z",
    "title_canon_sha256": "3554cf223f4ce8339bbe9f81d8c194b4d339020356569579db072a6a5fcf01e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0702049",
    "kind": "arxiv",
    "version": 2
  }
}