<p>This research explores advancements in quantum cryptography through the use of single particle state rotation. In the age of post-quantum, quantum cryptography plays an important role in safe and securing communication. However, current protocols such as BB84 and E91 have face the limitations due to their exclusive reliance on quantum key distribution, scalability issues, and noise weakness. In this work, we propose a method that combines single particle state rotation with dual-channel hybrid encryption to enhance both security and robustness. By manipulating the quantum states of individual particles, we aim to improve the efficiency and security of cryptographic protocols over quantum channels. We investigate the theoretical framework and practical application of state rotation in quantum information processing, focusing on secure key distribution and data transmission. Encrypting the dual channel layer with classical information extracted from state rotation measurements further strengthens the system’s resilience against eavesdropping and other threats. Our findings, grounded in theoretical analysis and experimental validations, demonstrate the potential of single particle state rotation to significantly enhance quantum communication security. This work contributes novel strategies towards the development of practical and secure quantum communication technologies.</p>