Which type of storage uses holographic techniques?

Holographic storage utilizes techniques that involve recording information in three dimensions, often using laser light to create holograms. This method allows data to be stored in a more compact form than traditional storage methods. Holographic storage can achieve significantly higher data densities, making it a promising technology for the future.

In contrast to other storage types, such as magnetic, flash, and optical storage, which have their own limitations and methods of data retrieval, holographic storage represents a unique and advanced approach. For instance, while magnetic storage relies on magnetizing certain regions of a disk or tape, and flash storage uses electronic circuits to store data, these methods do not leverage the same three-dimensional recording techniques that define holographic storage's capacity and speed advantages.

Optical storage, which does utilize light for data reading and writing, is fundamentally different as it typically relies on the surface information of a medium like a CD or DVD and does not store data in a holographic format. Thus, the choice of holographic storage correctly identifies the technology that specifically employs holographic techniques for its data storage and retrieval processes.