Pith Number

pith:ATSDIYUX

pith:2026:ATSDIYUXDPUQPCNMN53E5HAK6F

not attested not anchored not stored refs pending

Strain engineering of Andreev spin qubits in Germanium

Anton Akhmerov, Antonio L. R. Manesco, Bernard van Heck, Patrick Del Vecchio, Stefano Bosco, Valla Fatemi, Vittorio Coppini

Compressive strain suppresses spin splitting in germanium Josephson junctions, while unstrained and tensile-strained structures produce GHz-scale splittings and enable fast all-electric gates.

arxiv:2604.22650 v2 · 2026-04-24 · cond-mat.mes-hall

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\usepackage{pith}
\pithnumber{ATSDIYUXDPUQPCNMN53E5HAK6F}

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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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

By numerically simulating ballistic Josephson junctions, we predict spin splittings comfortably in the GHz range, more than 2 orders of magnitude larger than compressively strained cases, and all-electric quantum gates in a hundred nanoseconds.

C2weakest assumption

The numerical simulations of ballistic junctions accurately capture real-device physics, including the strain dependence of spin-orbit interaction without additional disorder or interface effects that could suppress the splitting.

C3one line summary

Compressive strain suppresses spin splitting in germanium Josephson junctions while tensile or unstrained heterostructures enable GHz-scale splittings for Andreev spin qubits via enhanced spin-orbit effects.

Receipt and verification

First computed	2026-05-21T02:05:03.319726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04e43462971be90789ac6f764e9c0af17fa14c62a69ed27b955cdd3446e56651

Aliases

arxiv: 2604.22650 · arxiv_version: 2604.22650v2 · doi: 10.48550/arxiv.2604.22650 · pith_short_12: ATSDIYUXDPUQ · pith_short_16: ATSDIYUXDPUQPCNM · pith_short_8: ATSDIYUX

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/ATSDIYUXDPUQPCNMN53E5HAK6F \
  | 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: 04e43462971be90789ac6f764e9c0af17fa14c62a69ed27b955cdd3446e56651

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78a5d4aed801691d0744f03a3bb8203c22a9fe1e485564a88c21f41065880bc7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2026-04-24T15:23:11Z",
    "title_canon_sha256": "42b39bdc52be28f6f52cc698ebd91f54fd2c98321614d59ba0d5a5def5da32ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.22650",
    "kind": "arxiv",
    "version": 2
  }
}