Images
Below are various pictures related to our work. Unless otherwise noted, all images copyright Markus Greiner, University of Colorado, Boulder.
Time of flight images showing the fermionic condensate. The images are shown for a detuning of the magnetic field of 0.55 G, 0.25 G and 0.12 G (left to right) with respect to the Feshbach resonance position on the BCS (a<0) side of the resonance. Smaller magnetic field detuning corresponds to stronger attractive interactions between two atoms. In order to observe the condensation of pairs of atoms the fermionic system is projected onto a molecule gas.
Time of flight images showing the fermionic condensate (see above).
Metaphor to explain our fermionic condensate:
1. These dancers represent our fermionic atoms. They appear to be moving independently, however, there is a subtle pairing: You can see this from the dancers eye contact and body language. These pairs act like bosons and can form a condensate.
1. These dancers represent our fermionic atoms. They appear to be moving independently, however, there is a subtle pairing: You can see this from the dancers eye contact and body language. These pairs act like bosons and can form a condensate.
2. (Picture with bound molecules) To see the condensation of pairs of fermionic atoms we suddenly bring together the two atoms (or dancers here) in each of these subtle pairs. When we look at the motion of these bound pairs the condensation apparent.
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