Pith Number

pith:NPI6Q65L

pith:2018:NPI6Q65LG4SA2VLO3WDVOGB3PN

not attested not anchored not stored refs pending

Direct Reconstruction of the Quantum Density Matrix by Strong Measurements

Daniele Dequal, Giulio Foletto, Giuseppe Vallone, Luca Calderaro, Paolo Villoresi

arxiv:1803.10703 v2 · 2018-03-28 · 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{NPI6Q65LG4SA2VLO3WDVOGB3PN}

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	2026-05-17T23:55:07.871112Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bd1e87bab37240d556edd8757183b7b58bdf4a86b6f5692ba235be9c580e4a9

Aliases

arxiv: 1803.10703 · arxiv_version: 1803.10703v2 · doi: 10.48550/arxiv.1803.10703 · pith_short_12: NPI6Q65LG4SA · pith_short_16: NPI6Q65LG4SA2VLO · pith_short_8: NPI6Q65L

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/NPI6Q65LG4SA2VLO3WDVOGB3PN \
  | 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: 6bd1e87bab37240d556edd8757183b7b58bdf4a86b6f5692ba235be9c580e4a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d57b59b08aed7ab7f525e362269ad6f6b02beb817208f93480e9e94c618c81db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-03-28T16:13:59Z",
    "title_canon_sha256": "6ecdae80be582dbed1d2e5eb4892ece5f9228d591458f7eee61b8eb15dbad2a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.10703",
    "kind": "arxiv",
    "version": 2
  }
}