Pith Number

pith:O4HZR72G

pith:2005:O4HZR72GSZN2EEBSQX7WFGMF4S

not attested not anchored not stored refs pending

Optimal Quantum Filtering and Quantum Feedback Control

S. C. Edwards, V. P. Belavkin

arxiv:quant-ph/0506018 v2 · 2005-06-02 · 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{O4HZR72GSZN2EEBSQX7WFGMF4S}

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

1 paper in Pith

Optimal State Preparation for Impulse Estimation in Gaussian Quantum Systems

Receipt and verification

First computed	2026-07-04T14:46:59.074498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

770f98ff46965ba2103285ff629985e489b85caa41feb380f60a1cc238a24b43

Aliases

arxiv: quant-ph/0506018 · arxiv_version: quant-ph/0506018v2 · doi: 10.48550/arxiv.quant-ph/0506018 · pith_short_12: O4HZR72GSZN2 · pith_short_16: O4HZR72GSZN2EEBS · pith_short_8: O4HZR72G

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/O4HZR72GSZN2EEBSQX7WFGMF4S \
  | 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: 770f98ff46965ba2103285ff629985e489b85caa41feb380f60a1cc238a24b43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22ce26053f6e6852d4c1f8a3b00776b813f356efd1bc73c8b47aef781a508fba",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-06-02T13:09:15Z",
    "title_canon_sha256": "1f5cfd63b974d2229119a98099f54b4a1ef9ad47f0e68f4efcf0f987f33811f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0506018",
    "kind": "arxiv",
    "version": 2
  }
}