Pith Number

pith:HWJ4AFBG

pith:2025:HWJ4AFBGVHUEP6YVP4DWLHDDJ2

not attested not anchored not stored refs resolved

Josephson Dynamics in 2D Ring-shaped Condensates

Koon Siang Gan, Luigi Amico, Rainer Dumke, Vijay Pal Singh

A ring-shaped Bose-Einstein condensate with two movable optical barriers supports a dc Josephson current up to a critical value before vortex pairs trigger dissipation while preserving global phase locking.

arxiv:2509.00533 v2 · 2025-08-30 · cond-mat.quant-gas

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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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Claims

C1strongest claim

For narrow junctions (w ≈ 1 μm) the circuit exhibits a pronounced dc branch that terminates at a critical current Ic = 9(1) × 10^3 s^{-1}; above this threshold the system switches to an ac, resistive regime with dissipation mediated by the nucleation and traversal of vortex-antivortex pairs while the bulk condensate remains globally phase-locked.

C2weakest assumption

The two optical barriers function as movable weak links that impose a steady bias current while preserving the ring's topological constraint on quantized circulation.

C3one line summary

A 2D ring BEC with two movable optical barriers shows a dc Josephson branch up to a measured critical current, after which vortex-antivortex pairs cause dissipation while the bulk remains phase-locked.

References

61 extracted · 61 resolved · 0 Pith anchors

[1] B. D. Josephson, Possible new effects in superconductive tunnelling, Physics letters 1, 251 (1962) 1962

[2] A. Barone and G. Patern` o, Josephson Effects: Basic Concepts (Springer, 1983) 1983

[3] Tinkham, Introduction to superconductivity (Courier Corporation, 2004) 2004

[4] A. Rashidi, S. Ahadi, and S. Stemmer, Self-field-induced josephson diode effect, Nano Letters (2025) 2025

[5] K. G. Fedorov, S. V. Shitov, H. Rotzinger, and A. V. Ustinov, Nonreciprocal microwave transmission through a long josephson junction, Physical Review B—Condensed Matter and Materials Physics 85, 18451 2012

Formal links

2 machine-checked theorem links

Cited by

3 papers in Pith

Shapiro steps of superfluid Fermi gases in a ring trap across the BCS--BEC crossover

Fraunhofer Patterns in Atomic Josephson Junctions

Dynamics of one-dimensional Bose-Josephson Junction in a Box Trap: From Coherent Oscillations to Many-Body Dephasing and Dynamical Freezing

Receipt and verification

First computed	2026-05-29T01:04:55.536803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d93c01426a9e847fb157f07659c634ea3a41e52ac98016ee16a254f8e6fb45d

Aliases

arxiv: 2509.00533 · arxiv_version: 2509.00533v2 · doi: 10.48550/arxiv.2509.00533 · pith_short_12: HWJ4AFBGVHUE · pith_short_16: HWJ4AFBGVHUEP6YV · pith_short_8: HWJ4AFBG

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HWJ4AFBGVHUEP6YVP4DWLHDDJ2 \
  | 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: 3d93c01426a9e847fb157f07659c634ea3a41e52ac98016ee16a254f8e6fb45d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9873bab4028e7fe2115bb668e9b35e3eb235e802830c637ba8c891bbfb4525ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.quant-gas",
    "submitted_at": "2025-08-30T15:27:22Z",
    "title_canon_sha256": "49f67860fe01232707edabb4797e17485902549d5047303759e98850db275bf5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.00533",
    "kind": "arxiv",
    "version": 2
  }
}