In which technology are data stored in the form of light, promising much higher speeds and storage capacity than traditional media?

Holographic storage

Holographic data storage uses laser light to create and read three-dimensional images within a medium, allowing for massive amounts of information to be stored in a small space. This technology leverages the three-dimensional nature of holography to increase storage density, promising a future where data can be stored more efficiently and accessed more quickly. Although the concept has existed for several decades, recent advances in materials and laser technology have brought holographic storage closer to commercial viability, offering potential for a breakthrough in the field of data storage. Besides its high capacity, holographic storage also offers the advantage of increased data longevity and resistance to physical damage, which could transform how we preserve important information over the long term.