Pith Number

pith:QIN4SDYB

pith:2002:QIN4SDYBPNCZK36QPTCFT5DM6Q

not attested not anchored not stored refs pending

Improved discrimination of unitaries by entangled probes

G. Mauro D'Ariano, Matteo G. A. Paris, Paoloplacido Lo Presti

arxiv:quant-ph/0204050 v1 · 2002-04-09 · 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{QIN4SDYBPNCZK36QPTCFT5DM6Q}

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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.

Cited by

1 paper in Pith

Entanglement in quantum channel discrimination: sometimes less is more

Receipt and verification

First computed	2026-07-04T16:36:02.189762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

821bc90f017b45956fd07cc459f46cf400773afc7f5f92496340b4aea6a86ad5

Aliases

arxiv: quant-ph/0204050 · arxiv_version: quant-ph/0204050v1 · doi: 10.48550/arxiv.quant-ph/0204050 · pith_short_12: QIN4SDYBPNCZ · pith_short_16: QIN4SDYBPNCZK36Q · pith_short_8: QIN4SDYB

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/QIN4SDYBPNCZK36QPTCFT5DM6Q \
  | 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: 821bc90f017b45956fd07cc459f46cf400773afc7f5f92496340b4aea6a86ad5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f618f48dd78fd5c226322eb631b3614689f993674249e940fdc41bee8fb1f460",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-04-09T16:30:40Z",
    "title_canon_sha256": "237aa2a056778854474dcdb353a9c7fd4ac7f05cd5ed51e53683c0e0b6637d8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0204050",
    "kind": "arxiv",
    "version": 1
  }
}