Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2007-10-20
Physics
Condensed Matter
Other Condensed Matter
Scientific paper
We show that a robust macroscopic atom-molecule dark state can exist in fermionic systems, which represents a coherent superposition between the ground molecular BEC and the atomic BCS paired state. We take advantage of the tunability offered by external laser fields, and explore this superposition for demonstrating coherent oscillations between ground molecules and atom pairs. We interpret the oscillation frequencies in terms of the collective excitations of the dark state.
Jiang Lei
Ling Hong Y.
Pu Han
Robertson Andrew
Zhang Weiping
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