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Laser probing of atomic Cooper pairs

P. Torma·P. Zoller
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Abstract

We consider a gas of attractively interacting cold Fermionic atoms which are manipulated by laser light. The laser induces a transition from an internal state with large negative scattering length to one with almost no interactions. The process can be viewed as a tunneling of atomic population between the superconducting and the normal states of the gas. It can be used to detect the BCS-ground state and to measure the superconducting order parameter.

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P. Torma, P. Zoller. 2000-01-24. Laser probing of atomic Cooper pairs. https://doi.org/10.1103/physrevlett.85.487

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