Sequence‐Encoded Holography via Hanoi Tower‐Inspired Cascaded Liquid Crystal Optical Elements

Abstract Holographic display and information processing technologies based on encoded optical elements are increasingly recognized as promising solutions for optical encryption and image display, owing to their compact structure and high information density. However, most existing implementations on liquid crystal (LC) or metasurface platforms rely on static single‐layer modulation, restricting their scalability toward high‐capacity, multi‐channel, and reconfigurable control. Here, a Hanoi Tower‐inspired encoding framework is proposed, in which cascaded geometric‐phase LC layers define a set of non‐commutative transformation pathways, each uniquely governing the resulting holographic output—analogous to the hierarchical constraints of the Hanoi Tower puzzle. Leveraging both the number and stacking order of LC layers, the approach enables scalable coding with exponentially increasing channel capacity. Dual‐ and triple‐layer configurations are experimentally demonstrated, using three LC devices, and extend the architecture to five layers via numerical optimization, achieving 65 independent holographic channels. To support secure decoding, invisible blue quantum dot (QD) markers are integrated onto each LC layer, enabling physical identity recognition under UV illumination. The proposed platform offers high optical efficiency, enhanced security, and excellent scalability, making it well‐suited for next‐generation applications in optical encryption, volumetric storage, and reconfigurable display applications.