LASER-LIKE SCHEME FOR ATOMIC-MATTER WAVES

We present a scheme for a laser-like source of atoms, starting from atomic de Broglie wave resonators, for which we seek to overcome losses by gain. The resonators are blue-detuned optical dipole-force traps, which can be loaded continuously or repetitively with laser-cooled atoms. This is achieved by trapping the atoms in a different internal state than that used for laser cooling. The transfer of cold atoms into the trapped states involves emission of a photon and can be stimulated by the presence of identical bosonic atoms in the final atomic state. Numerical simulations show threshold behaviour, mode competition and Poissonian atom statistics above threshold.