  Exciton polaritons are inherently non-Hermitian systems with adjustable gain
and loss coefficients. In this work we show that exciton polariton condensates
can be selectively localized in an optically-induced lattice with equal
potential depth by judiciously controlling a second focused pump with a very
small size. Specifically, the localized polariton condensate can be tuned among
different potential traps by adjusting the relative distance between the small
pump spot and the potential lattice. The adjustment of the excitation position
of the smaller pump and its combination with the bigger pump for the potential
creation induce a position-dependent loss distribution across the system. The
localization of the exciton polariton condensate and its control are
independent of the orientation of the potential lattice, thus, even in slightly
disordered system, one can selectively excite such localized polariton
condensates. Our results illuminate a path to manipulate the non-Hermitian
bosonic condensates in integrated photonic chips.
