Laser probing of Cooper-paired trapped atoms

نویسندگان

  • G. M. Bruun
  • P. Törmä
  • M. Rodriguez
  • P. Zoller
چکیده

We consider a gas of trapped Cooper-paired fermionic atoms that are manipulated by laser light. The laser induces a transition from an internal state with large negative scattering length ~superfluid! to one with weaker interactions ~normal gas!. We show that the process can be used to detect the presence of the superconducting order parameter. Also, we propose a direct way of measuring the size of the gap in the trap. The efficiency and feasibility of this probing method is investigated in detail in different physical situations.

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تاریخ انتشار 2001