Interferometric measurement of interhyperfine scattering lengths in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Rb</mml:mi><mml:mprescripts /><mml:none /><mml:mn>87</mml:mn></mml:mmultiscripts></mml:math>
We present interferometeric measurements of the f = 1 to f = 2 interhyperfine scattering lengths in a single-domain spinor Bose-Einstein condensate of 87Rb. The interhyperfine interaction leads to a strong and state-dependent modification of the spin-mixing dynamics with respect to a noninteracting...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/369305 |
| Acceso en línea: | https://hdl.handle.net/2117/369305 https://dx.doi.org/10.1103/PhysRevA.100.032704 |
| Access Level: | acceso abierto |
| Palabra clave: | Interferometry Bose-Einstein condensation Interferometria Àrees temàtiques de la UPC::Física |
| Sumario: | We present interferometeric measurements of the f = 1 to f = 2 interhyperfine scattering lengths in a single-domain spinor Bose-Einstein condensate of 87Rb. The interhyperfine interaction leads to a strong and state-dependent modification of the spin-mixing dynamics with respect to a noninteracting description. We employ hyperfine-specific Faraday-rotation probing to reveal the evolution of the transverse magnetization in each hyperfine manifold for different state preparations, and a comagnetometer strategy to cancel laboratory magnetic noise. The method allows precise determination of interhyperfine scattering length differences, calibrated to intrahyperfine scattering length differences. We report (a(12) 3 - a(12) 2 )/(a(1) 2 - a(1) 0 ) = -1.27(15) and (a(12) 1 - a(12) 2 )/(a(1) 2 - a(1) 0 ) = -1.31(13), limited by atom number uncertainty. With achievable control of atom number, we estimate precisions of ˜0.3% should be possible with this technique. |
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