Photonic bandgap (PBG) materials are structures that limit light propagation within a specified range of wavelengths, resulting in a photonic bandgap in which specific frequencies cannot pass through the material. With their distinct optical characteristics and reconfigurability, liquid crystals are increasingly exploited to create these PBG materials. This feature is critical for creating sophisticated photonic circuits and quantum communication systems. In this review, we also looked at Liquid crystals that can be utilized to construct photonic bandgap materials that control the flow of photons. Liquid crystals (LCs) have variable optical characteristics, making them excellent for creating photonic bandgap materials. These materials utilize LCs' anisotropy to develop structures that dynamically control photon flow. LCs' reconfigurability enables real-time tweaking of the photonic bandgap, making them highly adaptable for various quantum system applications . Photonic circuits are critical in quantum communication systems because they can modify and transfer information via light. Liquid crystals embedded with photonic bandgap materials improve the functionality of these circuits by allowing for dynamic control of photon flow. This dynamic control is critical for applications in quantum information processing and secure communication networks . Integrating crystal layers into structures allows for dynamically altering the refractive index through external triggers, like electric fields. This capability enables the manipulation of band gaps, which is essential for developing adaptable photonic tools and circuits . A recent study on integrating liquid crystals with photonic bandgap materials for quantum systems has yielded promising results. Studies have shown that photonic crystal cavities may effectively couple nano emitters to photonic integrated circuits with excellent quality factors and small mode volumes . These advancements open up possibilities for quantum technology by enabling effective interactions between light and matter. By manipulating the polarization and phase of light with LCs integrated into waveguides, we can create electromodulators. These modulators can dynamically adjust states, which is crucial for signal processing within photonic circuits . Ensuring data transmission is an aspect of quantum communication. Using LCs in bandgap materials allows for the development of reliable QKD(Quantum key distribution) systems. The dynamic control offered by LCs over photon properties enhances the flexibility and security of QKD systems, making them more resilient to interception or eavesdropping attempts . Individual photons must be precisely controlled for quantum communication to occur. LCs serve as a medium for fine-tuning photon properties within photonic bandgap structures, supporting efficient photon routing, entanglement distribution, and other key quantum activities . While there are advantages, we discovered that incorporating LCs into systems comes with challenges. The extensive and expensive process of developing integrated chips hinders their widespread use. Yet progress in devices where LCs have a crucial role could significantly reduce development expenses, expedite market entry, and enhance sustainability. Future studies ought to focus on improving the stability and response times of LCbased materials and exploring manufacturing methods for seamless integration into quantum systems .