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Cold-atom comagnetometry via optical control of spin states — arXiv:2608.13936

Source: arXiv (en)
Original: https://arxiv.org/abs/2608.13936
License (as archived): CC0-1.0
Archived: 2026-10-19T04:09:59.088Z
SHA-256 of the archived text: fb2d51403c69c581fc1b973275491e24200a8a2e20fdaefc8190fda45f79ee92
Stable URL of this page: https://metraipolis.com/documento/dc_7a77c4a669c3

How to cite

Cold-atom comagnetometry via optical control of spin states — arXiv:2608.13936 — arXiv (en), https://arxiv.org/abs/2608.13936 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_7a77c4a669c3 (Metraipolis archive dc_7a77c4a669c3, sha256 fb2d51403c69c581fc1b973275491e24200a8a2e20fdaefc8190fda45f79ee92)

BibTeX

@misc{dc7a77c4a669c3,
  title = {Cold-atom comagnetometry via optical control of spin states — arXiv:2608.13936},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2608.13936},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_7a77c4a669c3; sha256 fb2d51403c69c581fc1b973275491e24200a8a2e20fdaefc8190fda45f79ee92},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2608.13936. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Atomic spin-based comagnetometers are powerful tools for precision sensing and tests of fundamental physics. Compared with the widely used gas-cell comagnetometer systems, cold-atom systems offer access to much shorter distance scales and allow implementation of {optical} quantum control techniques. However, in order to realize long spin coherence times with cold atoms, it is necessary to employ diamagnetic atoms and overcome decoherence induced by light shifts. Here we demonstrate a cold-atom comagnetometer based on the nuclear spins of $^{171}$Yb (spin-1/2) and $^{173}$Yb (spin-5/2), jointly trapped in an optical lattice. Vector light shifts are suppressed by enforcing linear polarization of the lattice, while tensor shifts in $^{173}$Yb are suppressed via the use of a Schrödinger cat state. This enables simultaneous Ramsey interferometry on both isotopes with a spin coherence time of 60 s. We achieve a magnetic noise suppression factor exceeding $3\times10^4$, and determine the ratio of nuclear magnetic moments to 4 ppm precision. Our results establish a new cold-atom platform for spin-based sensing and open pathways toward quantum-enhanced searches for physics beyond the Standard Model.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-08-17 in quant-ph).
Categorie arXiv: Atomic Physics (physics.atom-ph) ; Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2608.13936 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-19T04:01:17.548Z dalla pagina https://arxiv.org/catchup/quant-ph/2026-08-17?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).