Pith Number

pith:WZADL6RA

pith:1996:WZADL6RAM4T2FVV6XJCNVFUA6L

not attested not anchored not stored refs pending

Quantum state estimation

(Department of Optics, Olomouc), Zdenek Hradil

arxiv:quant-ph/9609012 v1 · 1996-09-17 · 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{WZADL6RAM4T2FVV6XJCNVFUA6L}

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.

Cited by

2 papers in Pith

Connecting Quantum Tomography and Quantum Retrodiction

Quantum Machine Learning for State Tomography Using Classical Data

Receipt and verification

First computed	2026-07-04T16:02:41.101633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b64035fa206727a2d6beba44da9680f2e825bae1cb132e80461952281153a932

Aliases

arxiv: quant-ph/9609012 · arxiv_version: quant-ph/9609012v1 · doi: 10.48550/arxiv.quant-ph/9609012 · pith_short_12: WZADL6RAM4T2 · pith_short_16: WZADL6RAM4T2FVV6 · pith_short_8: WZADL6RA

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/WZADL6RAM4T2FVV6XJCNVFUA6L \
  | 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: b64035fa206727a2d6beba44da9680f2e825bae1cb132e80461952281153a932

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12abb3364242793de25d2108c2655e3cc1e6eb47c6ed150627c01dfa1c44cf50",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1996-09-17T10:07:00Z",
    "title_canon_sha256": "02d09204329442f1c84238e960d6ad709d3562cb469c72c3e2a6451dd67cc3b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9609012",
    "kind": "arxiv",
    "version": 1
  }
}