Quantum communication uses quantum mechanics concepts to provide safe data flow, including superposition and entanglement. Because of their capacity to dynamically adjust the polarization and phase of light, LCs(liquid crystals) are very useful in this application. For example, using LCs in quantum key distribution (QKD)systems can improve the security and efficiency of encryption processes. Numerous research studies have highlighted a development: creating microlasers that can adjust their wavelengths using liquid crystals. These microlasers leverage the pitch modulation of liquid crystals to precisely control their laser output. This adjustability ensures secure quantum communication channels, where maintaining the confidentiality and integrity of transmitted data is paramount . Changing the lasing wavelength through the transformation of chiral dopants in liquid crystals makes it possible to implement highly secure communication protocols that can be tuned using light. Cryptography aims to protect data from access through encryption techniques. Liquid crystals, known for their ability to generate emissions and respond flexibly to stimuli, provide an excellent foundation for building cryptographic tools . This feature enables the encoding of data using the wavelengths of LC microlasers, providing a technique for secure data encryption and validation. Our review also delved into the study of LCRLs (Liquid crystal random lasers) in lasers, demonstrating promise in enhancing quantum communication systems with better security and anti-counterfeiting measures. Liquid crystal random lasers, also known as LCRLs, exhibit characteristics that make them appealing for quantum communication and cryptography applications. These lasers can generate beams suitable for cryptographic purposes, serving as fundamental elements for ensuring secure communication, as evidenced by some studies . The ability to flexibly incorporate dopants into LC materials and their photonic crystal structure render them highly effective for encrypting quantum communications . The ability to adjust the lasing wavelength of LCRLs can be used to encrypt and verify data in quantum communication. Each specific wavelength corresponds to a code that ensures data transfer. The unique crystal properties of LCs, such as birefringence, Bragg reflection, and diffraction, offer advantages for advancing communication technologies in quantum cryptography . Liquid crystals have proven to be an asset in enhancing quantum communication and cryptography. Their distinctive optical characteristics and adaptability make them ideal for boosting the security and effectiveness of quantum information systems. Ongoing exploration and innovation in this field will lead to advancements and applications in the future.