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Spontaneous emission by an excited fermionic atom can be suppressed due tothe Pauli exclusion principle if the relevant final states after the decay arealready occupied by identical atoms in the ground state. Here we discuss asetup where a single atom is prepared in the first excited state on a singlesite of an optical lattice under conditions of very tight trapping. Weinvestigate these phenomena in the context of two experimental realizations:(1) with alkali atoms, where the decay rate of the excited state is large and(2) with alkaline earth-like atoms, where the decay rate from metastable statescan be tuned in experiments. This phenomenon has potential applications towardsreservoir engineering and dissipative many-body state preparation in an opticallattice.

Spatial Pauli-blocking of spontaneous emission in optical lattices