bosonic atoms
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2021 ◽  
Vol 104 (2) ◽  
Author(s):  
A. Farolfi ◽  
A. Zenesini ◽  
R. Cominotti ◽  
D. Trypogeorgos ◽  
A. Recati ◽  
...  


Author(s):  
V.I. Yudin ◽  
A.V. Taichenachev ◽  
M.Yu. Basalaev ◽  
O.N. Prudnikov ◽  
T. Zanon-Willette ◽  
...  


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tomasz Świsłocki ◽  
Mariusz Gajda ◽  
Mirosław Brewczyk ◽  
Piotr Deuar

AbstractWe study the spin distillation of spinor gases of bosonic atoms and find two different mechanisms in $${}^{52}$$ 52 Cr and $$^{23}$$ 23 Na atoms, both of which can cool effectively. The first mechanism involves dipolar scattering into initially unoccupied spin states and cools only above a threshold magnetic field. The second proceeds via equilibrium relaxation of the thermal cloud into empty spin states, reducing its proportion in the initial component. It cools only below a threshold magnetic field. The technique was initially demonstrated experimentally for a chromium dipolar gas (Naylor et al. in Phys Rev Lett 115:243002, 2015), whereas here we develop the concept further and provide an in-depth understanding of the required physics and limitations involved. Through numerical simulations, we reveal the mechanisms involved and demonstrate that the spin distillation cycle can be repeated several times, each time resulting in a significant additional reduction of the thermal atom fraction. Threshold values of magnetic field and predictions for the achievable temperature are also identified.







2021 ◽  
Vol 53 (1) ◽  
Author(s):  
Eric Tala-Tebue ◽  
Hadi Rezazadeh ◽  
Zacharie Isidore Djoufack ◽  
Mostafa Eslam ◽  
Aurélien Kenfack-Jiotsa ◽  
...  


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Javed Akram ◽  
Khan Qasim ◽  
Lei Wei

AbstractThe characteristic of the angular distributions of accelerated Bose–Einstein condensate (BEC) atoms incidence on the surface is designed using the mathematical modeling method. Here, we proposed the idea to study retroreflection and diffraction of a BEC from an evanescent standing wave potential (ESWP). The ESWP is formed by multiple reflections of the laser beam from the surface of the prism under the influence of gravity. After BEC’s reflection and diffraction, the so-called BEC’s density rainbow patterns develop due to the interference which depends on the surface structure which we model with the periodic decaying evanescent field. The interaction of accelerated bosonic atoms with a surface can help to demonstrate surface structures or to determine surface roughness, or to build future high spatial resolution and high sensitivity magnetic-field sensors in two-dimensional systems.



2020 ◽  
Vol 102 (2) ◽  
Author(s):  
Araceli Venegas-Gomez ◽  
Anton S. Buyskikh ◽  
Johannes Schachenmayer ◽  
Wolfgang Ketterle ◽  
Andrew J. Daley


Author(s):  
Miron Ya Amusia ◽  
Larissa V. Chernysheva
Keyword(s):  


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