  Deconfined quantum critical points (DQCPs) are proposed as unconventional
second-order phase transitions beyond the Landau-Ginzburg-Wilson paradigm. The
nature and experimental realizations of DQCPs are crucial issues of importance.
We illustrate the potential for DQCPs between the valence bond solid state and
the antiferromagnetic phase to arise in optical lattices containing frustrated
dipolar bosons subject to hard-core constraints. The emergence of DQCPs is
comprehended through the fusion of two Berezinskii-Kosterlitz-Thouless (BKT)
transitions. The DQCPs and the BKTs are confirmed by the finite-size scaling of
ground-state fidelity susceptibilities. The numerical analysis reveals varying
critical exponents of the correlation length in DQCPs and the logarithmic
scaling in BKTs, respectively. This work offers a promising platform for
realizing DQCPs and provides valuable insights into their nature within the
framework of topological phase transitions.
