Pith Number

pith:XXJ73TDP

pith:2005:XXJ73TDPIYVPN5CY4YY2QHBGTS

not attested not anchored not stored refs pending

Rapid State-Reduction of Quantum Systems Using Feedback Control

Joshua Combes, Kurt Jacobs

arxiv:quant-ph/0508007 v3 · 2005-08-01 · 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{XXJ73TDPIYVPN5CY4YY2QHBGTS}

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	2026-07-04T15:47:55.482788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdd3fdcc6f462af6f458e631a81c269cbbe0496efcc8d77603a415abcd26d042

Aliases

arxiv: quant-ph/0508007 · arxiv_version: quant-ph/0508007v3 · doi: 10.48550/arxiv.quant-ph/0508007 · pith_short_12: XXJ73TDPIYVP · pith_short_16: XXJ73TDPIYVPN5CY · pith_short_8: XXJ73TDP

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/XXJ73TDPIYVPN5CY4YY2QHBGTS \
  | 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: bdd3fdcc6f462af6f458e631a81c269cbbe0496efcc8d77603a415abcd26d042

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b5cef3237338b17590e1a93f91d95c4db12b899b5811e0e5af6256869994f54",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-08-01T13:44:07Z",
    "title_canon_sha256": "9b347b2ec565e262cc1fef04818f2e845b13b8cab941c0e250b1672d442254e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0508007",
    "kind": "arxiv",
    "version": 3
  }
}