2018/12/20 by Michelle Wynne Sze, M. W. C. Sze, John L. Bohn +1
Computer Science · Physics and Astronomy · #Atomic physics #Bose gas #Bose–Einstein condensate #Boson #Cold Atom Physics and Bose-Einstein Condensates #Harmonic #Omega #Physics #Production (economics) #Quantum Information and Cryptography #Quantum mechanics #Scattering #Scattering length #Strong Light-Matter Interactions #Thermal #Thermodynamics #Trap (plumbing) #physics.atom-ph
paper · pdf · doi:10.1103/physreva.99.033606
published as Phys. Rev. A 99, 033606 (2019)
arxiv created 2018/12/20 · openalex publication_date 2019/03/11 · arxiv updated 2019/03/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Producing a substantial and stable resonant Bose-Einstein condensate (BEC) has proven to be a challenging experimental task due to heating and three-body losses that may occur even before the gas comes to thermal equilibrium. In this paper, by considering two-body correlations, we note that a sudden quench from small to large scattering lengths is not an efficient way to prepare a resonant BEC. As an alternative, we propose a two-step scheme that involves an intermediate scattering length, between 0 and \ensuremath∞, which serves to maximize the transfer probability of N bosons of mass m in a harmonic trap with frequency \ensuremathω to the resonant state. We find that the intermediate scattering length should be a\ensuremath≈3.16N^\ensuremath-2/3√\ensuremathℏ/(m\ensuremathω), and that it produces an optimum transition probability of 1.03N^\ensuremath-1/6.