Tuning the Scattering Length with an Optically Induced Feshbach Resonance
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We demonstrate optical tuning of the scattering length in a Bose-Einstein condensate as predicted by Fedichev et al. [Phys. Rev. Lett. 77, 2913 (1996)]. In our experiment, atoms in a 87Rb condensate are exposed to laser light which is tuned close to the transition frequency to an excited molecular state. By controlling the power and detuning of the laser beam we can change the atomic scattering length over a wide range. In view of laser-driven atomic losses, we use Bragg spectroscopy as a fast method to measure the scattering length of the atoms.
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In the real white-noise case, the fidelity decay rate 1/τ_D equals the sum of γ_α ΔL_α^2 and is bounded by 1/4 Σ γ_α ||L_α||^2.
“where 1 τ D ¼ X α γ α ΔL 2 α ≤ 1 4 X α γ α ∥ Lα ∥ 2 ;ð15Þ”
From Quantum simulation of generic many-body open system dynamics using classical noise (2017) · cites this paper as [40]
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- Authors
- Theis, M., Thalhammer, G., Winkler, K., Hellwig, M., Ruff, G., Grimm, R., & Denschlag, J. H.
- Affiliations
- Universität Innsbruck (AT)
- Austrian Academy of Sciences (AT)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2004-09-15
- Volume
- 93
- Issue
- 12
- Pages
- 123001-123001
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2072442508
- Cited by
- 553
- References
- 17
- Citations by year
- 2026: 11 · 2025: 18 · 2024: 8 · 2023: 19 · 2022: 10 · 2021: 20 · 2020: 18 · 2019: 25 · 2018: 17 · 2017: 19 · 2016: 24 · 2015: 27 · 2014: 25 · 2013: 30 · 2012: 20
- FWCI
- 22.51
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Cold Atom Physics and Bose-Einstein Condensates
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum optics and atomic interactions
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Strong Light-Matter Interactions
- Keywords
- Feshbach resonance, scattering length tuning, Bose-Einstein condensate, rubidium-87, Bragg spectroscopy, laser detuning, laser power control
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