  Quantum coherence, which quantifies the superposition properties of a quantum
state, plays an indispensable role in quantum resource theory. A recent
theoretical work [Phys. Rev. Lett. \textbf{116}, 070402 (2016)] studied the
manipulation of quantum coherence in bipartite or multipartite systems under
the protocol Local Incoherent Operation and Classical Communication (LQICC).
Here we present the first experimental realization of obtaining maximal
coherence in assisted distillation protocol based on linear optical system. The
results of our work show that the optimal distillable coherence rate can be
reached even in one-copy scenario when the overall bipartite qubit state is
pure. Moreover, the experiments for mixed states showed that distillable
coherence can be increased with less demand than entanglement distillation. Our
work might be helpful in the remote quantum information processing and quantum
control.
