Interferometric measurement of interhyperfine scattering lengths in 87Rb
Year: 2019
Authors: Gomez P., Mazzinghi C., Martin F., Coop S., Palacios S., Mitchell M.W.
Autors Affiliation: Barcelona Inst Sci & Technol, ICFO Inst Ciencies Foton, Castelldefels 08860, Barcelona, Spain; Quside Technol SL, Esteve Terradas 1,Of 217, Castelldefels 08860, Barcelona, Spain; ICREA, Barcelona 08010, Spain.
Abstract: We present interferometeric measurements of the f = 1 to f = 2 interhyperfine scattering lengths in a single-domain spinor Bose-Einstein condensate of Rb-87. 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(3)((12)) – a(2)((12)) )/(a(2)((1) )- a(0)((1))) = 1.27(15) and (a(1)((12)) – a(2)((12)))/(a(2)((1)) – a(0)((1))) = 1.31(13), limited by atom number uncertainty. With achievable control of atom number, we estimate precisions of approximate to 0.3% should be possible with this technique.
Journal/Review: PHYSICAL REVIEW A
Volume: 100 (3) Pages from: 32704-1 to: 32704-9
More Information: We thank T. Hirano for useful discussions on hyperfinedependent state preparation. This work was supported by European Research Council (ERC) projects AQUMET (280169) and ERIDIAN (713682), European Union projects QUIC (Grant Agreement No. 641122) and FET Innovation Launchpad UVALITH (800901), the Spanish MINECO project s MAQRO (Ref. FIS2015-68039-P) and QCLOCKS (PCI2018-092973), the Severo Ochoa programme (SEV-2015-0522), Agencia de Gestio d’Ajuts Universitaris i de Recerca (AGAUR) project (2017-SGR-1354), Fundacio Privada Cellex, Fundacio Privada MIR-PUIG and Generalitat de Catalunya (CERCA program), Quantum Technology Flagship project MACQSIMAL (820393), EMPIR project USOQS (17FUN03), Marie Sklodowska-Curie ITN ZULF-NMR (766402), and OCARINA (Grant agreement PGC2018-097056-B-I00).KeyWords: Bose-einstein Condensation; Gas; DynamicsDOI: 10.1103/PhysRevA.100.032704ImpactFactor: 2.777Citations: 4data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2025-03-09References taken from IsiWeb of Knowledge: (subscribers only)
