1999/11/26 by Andal Narayanan, Hema Ramachandran · 2 citations
Physics and Astronomy · #Atomic physics #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Component (thermodynamics) #Hyperfine structure #Laser #Phase (matter) #Physics #Population #Quantum #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Rabi cycle #Rabi frequency #Strong Light-Matter Interactions #cond-mat
paper · pdf · doi:10.1103/physreva.62.055602
published in Physical Review A 62(5) (American Physical Society) · 11 Latex pages, 2 figures (Figure 3 was removed and the text chnaged accordingly)
arxiv created 1999/11/26 · openalex publication_date 2000/10/12 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The time evolution equations for average values of population and relative phase of a strongly coupled two-component Bose-Einstein condensate (BEC) are derived analytically. The two components are two hyperfine states, which are coupled by an external laser that drives fast Rabi oscillations between these states. Specifically, this derivation incorporates the two-mode model proposed in J. Williams et al., e-print cond-mat 9904399 for the strongly coupled hyperfine states |1,\ensuremath-1〉 and |2,1〉 of 87Rb. The fast Rabi cycles are averaged out and the rate equations so derived represent the slow dynamics of the system. These include the collapse and revival of Rabi oscillations and their dependence on detuning and trap displacement as reported in experiments of J. Williams. A procedure for stabilizing vortices is also suggested.