Pith Number

pith:GJBEISG6

pith:2026:GJBEISG6MM5STVMI3HBIVBKBND

not attested not anchored not stored refs pending

Source-independent quantum key distribution without pre-sending entanglement

Hua-Lei Yin, Rong-Zheng Liu

A source-independent QKD protocol removes all source-side attacks without pre-sending entanglement and doubles transmission distance using non-classical light.

arxiv:2604.28089 v1 · 2026-04-30 · 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{GJBEISG6MM5STVMI3HBIVBKBND}

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.

Claims

C1strongest claim

we propose a source-independent (SI) QKD protocol that resolves all known and unknown source-side attacks without pre-sending entanglement source. [...] simultaneously doubles the transmission distance while remaining robustness against imperfection of source. Theoretical analysis shows that non-classical light source provides practical security advantages unattainable with conventional laser.

C2weakest assumption

The protocol assumes that its theoretical security analysis fully covers all possible source attacks in practice and that non-classical sources can be integrated without introducing new vulnerabilities; this assumption is stated in the abstract but lacks the detailed protocol description or proof steps needed to verify it.

C3one line summary

A source-independent QKD protocol without pre-sending entanglement resolves all source attacks, doubles secure distance, and gains advantages from non-classical light sources.

References

74 extracted · 0 resolved · 0 Pith anchors

[1] The sequences of states from two sources are synchronized and injected into two input ports,candd, of the polarizing beam splitter (PBS). The interference progress can be expressed as |+⟩c |+⟩d PBS −

[2] H.-K. Lo, M. Curty and K. Tamaki, Secure quantum key distribution, Nat. Photon.8, 595 (2014) 2014

[3] Yinet al., Measurement-Device-Independent Quantum Key Distribution Over a 404 km Optical Fiber, Phys 2016

[4] Y. Zhao, C.-H. F. Fung, B. Qi, C. Chen and H.-K. Lo, Quantum hacking: Experimental demonstration of time- shift attack against practical quantum-key-distribution systems, Phys. Rev. A78, 042333 (2008) 2008

[5] Lydersenet al., Hacking commercial quantum cryp- tography systems by tailored bright illumination, Nat 2010

Receipt and verification

First computed	2026-05-20T01:06:09.542301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32424448de633b29d588d9c28a854168efcfa03825733ec702786f11f303d540

Aliases

arxiv: 2604.28089 · arxiv_version: 2604.28089v1 · doi: 10.48550/arxiv.2604.28089 · pith_short_12: GJBEISG6MM5S · pith_short_16: GJBEISG6MM5STVMI · pith_short_8: GJBEISG6

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/GJBEISG6MM5STVMI3HBIVBKBND \
  | 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: 32424448de633b29d588d9c28a854168efcfa03825733ec702786f11f303d540

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6921a7c0db05bdf3bbcb65603ed5233b099b6bcb2b1afc8218ac0bcd8a913be4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-04-30T16:35:50Z",
    "title_canon_sha256": "701d580ffc0ff0ed783bafaf9a1f708e0b7c569dffaa905a90f17894396c4d31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.28089",
    "kind": "arxiv",
    "version": 1
  }
}