Laser probing of atomic cooper pairs

We consider a gas of attractively interacting cold fermionic atoms which ar e manipulated by laser light. The laser induces a transition from an intern al state with large negative scattering length to one with almost no intera ctions. The process can be viewed as a tunneling of atomic population betwe en 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 parame ter.