Pith Number

pith:PJRXZAIJ

pith:2020:PJRXZAIJVIYB4PCP2D4XQ4P4BN

not attested not anchored not stored refs pending

Fading channel estimation for free-space continuous-variable secure quantum communication

Bettina Heim, Christian Peuntinger, Christoph Marquardt, Dominique Elser, Gerd Leuchs, Kevin G\"unthner, L\'aszl\'o Ruppert, Radim Filip, Vladyslav C. Usenko

arxiv:2011.04386 v1 · 2020-11-09 · 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{PJRXZAIJVIYB4PCP2D4XQ4P4BN}

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

Free-Space CV-QKD with Single-Mode Fiber Reception: Effective Coupling Statistics and Protocol-Dependent Reference Noise

Receipt and verification

First computed	2026-07-05T01:50:05.074963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a637c8109aa301e3c4fd0f97871fc0b636dd75be66d438225c326fa33946f9d

Aliases

arxiv: 2011.04386 · arxiv_version: 2011.04386v1 · doi: 10.48550/arxiv.2011.04386 · pith_short_12: PJRXZAIJVIYB · pith_short_16: PJRXZAIJVIYB4PCP · pith_short_8: PJRXZAIJ

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/PJRXZAIJVIYB4PCP2D4XQ4P4BN \
  | 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: 7a637c8109aa301e3c4fd0f97871fc0b636dd75be66d438225c326fa33946f9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "330f0e02c56b84bb5270c31d74331c768862081d11c6dca5d2d2c1e8db064e32",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-11-09T12:40:56Z",
    "title_canon_sha256": "7f3ec8849bb27f47715edc84b83d463c0cab346302f7fbdc0b817c9ca9e0812e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.04386",
    "kind": "arxiv",
    "version": 1
  }
}