Quantum interference effects have been observed in devices like polarization beam splitters (PBS) and photonic crystal fibers (PCF) using liquid crystals. The unique properties of LCs enhance birefringence, which is crucial for splitting or combining quantum light states. Developing core crystal fibers (PS DC PCF PBS) filled with nematic liquid crystals has led to the creation of extremely short splitting lengths and wide bandwidths, making them beneficial for quantum communication systems . Other experimental demonstrations include the preservation of quantum coherence in a liquid crystal medium and manipulating quantum entanglement. Researchers can manipulate and analyze entangled states by embedding quantum dots or other quantum systems within a liquid crystal matrix, making use of the anisotropic features of LCs. This technique uses liquid crystals' tunability to dynamically modify entanglement properties, resulting in a versatile platform for quantum information processing. Furthermore, the structured structure of liquid crystals determines the coherence of quantum states, allowing for greater control over light propagation and polarization. This management is critical for preserving quantum coherence across more considerable distances than traditional mediums .