Effects of dipole–dipole interaction on the single-photon transport in a hybrid atom-optomechanical system coupling to a single-mode waveguide

• The dipole–dipole interaction between double two-level atoms can shift the reflected resonant points and the amplitudes of the two vacuum Rabi-splitting dips in the single-photon spectra.
• The narrow peaks are removed out of the EIT-type window and transformed into dips simultaneously due to the dipole–dipole interaction.
• The dipole–dipole interaction plays a similar role as does the positive atom–cavity detuning.
• The effects of atomic decay on the single-photon transport will be weakened as the dipole–dipole interaction increases.

We theoretically investigate the single-photon transport in a hybrid atom-optomechanical system embedded with two dipole-coupled two-level atoms, interacting with a single-mode optical waveguide. The transmission amplitudes for the single-photon propagation in such a hybrid system are obtained via a real-space approach. It is shown that the dipole–dipole interaction can significantly change the amplitudes and symmetries of the single-photon spectra. Interestingly, we find that the dipole–dipole interaction plays a similar role as does the positive atom–cavity detuning. In addition, the influence from the atomic dissipation can be weakened by increasing the dipole–dipole interaction.