dorsal/arxiv
View SchemaAtom waveguide using a two-color evanescent light field around a subwavelength-diameter optical fiber
| Authors | Fam Le Kien, V. I. Balykin, K. Hakuta |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0407107 |
| URL | https://arxiv.org/abs/quant-ph/0407107 |
| DOI | 10.1103/PhysRevA.70.063403 |
Abstract
We suggest using a two-color evanescent light field around a subwavelength-diameter fiber to trap and guide atoms. The optical fiber carries a red-detuned light and a blue-detuned light, with both modes far from resonance. When both input light fields are circularly polarized, a set of trapping minima of the total potential in the transverse plane is formed as a ring around the fiber. This design allows confinement of atoms to a cylindrical shell around the fiber. When one or both of the input light fields are linearly polarized, the total potential has two local minimum points in the transverse plane. This design allows confinement of atoms to two straight lines parallel to the fiber axis. Due to the thin thickness of the fiber, we can use far-off-resonance fields with substantially differing evanescent decay lengths to produce a net potential with a large depth, a large coherence time, and a large trap lifetime. For example, a 0.2-$\mu$m-radius silica fiber carrying 30 mW of 1.06-$\mu$m-wavelength light and 29 mW of 700-nm-wavelength light, both fields are circularly polarized at the input, gives for cesium atoms a trap depth of 2.9 mK, a coherence time of 32 ms, and a recoil-heating-limited trap lifetime of 541 s.
{
"annotation_id": "31e00d8f-1176-4121-a408-ed1aca3f8774",
"date_created": "2026-03-02T18:02:10.178000Z",
"date_modified": "2026-03-02T18:02:10.178000Z",
"file_hash": "acc3f3a7d22b1fae4e5421669369e2544d8f14ff4318308d5ce40ebf67dd3805",
"private": false,
"record": {
"abstract": "We suggest using a two-color evanescent light field around a\nsubwavelength-diameter fiber to trap and guide atoms. The optical fiber carries\na red-detuned light and a blue-detuned light, with both modes far from\nresonance. When both input light fields are circularly polarized, a set of\ntrapping minima of the total potential in the transverse plane is formed as a\nring around the fiber. This design allows confinement of atoms to a cylindrical\nshell around the fiber. When one or both of the input light fields are linearly\npolarized, the total potential has two local minimum points in the transverse\nplane. This design allows confinement of atoms to two straight lines parallel\nto the fiber axis. Due to the thin thickness of the fiber, we can use\nfar-off-resonance fields with substantially differing evanescent decay lengths\nto produce a net potential with a large depth, a large coherence time, and a\nlarge trap lifetime. For example, a 0.2-$\\mu$m-radius silica fiber carrying 30\nmW of 1.06-$\\mu$m-wavelength light and 29 mW of 700-nm-wavelength light, both\nfields are circularly polarized at the input, gives for cesium atoms a trap\ndepth of 2.9 mK, a coherence time of 32 ms, and a recoil-heating-limited trap\nlifetime of 541 s.",
"arxiv_id": "quant-ph/0407107",
"authors": [
"Fam Le Kien",
"V. I. Balykin",
"K. Hakuta"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.70.063403",
"title": "Atom waveguide using a two-color evanescent light field around a subwavelength-diameter optical fiber",
"url": "https://arxiv.org/abs/quant-ph/0407107"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "d597ceaa-14cf-43ea-9655-86c75649d7a9",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}