Physicists at LSU have developed what they describe as the first room-temperature quantum material that can identify and move distinct quantum states of light, according to ScienceDaily. The work, published in Nature, is aimed at overcoming one of the biggest obstacles in quantum materials research: the need for extreme cooling.
Most quantum materials only function near absolute zero because heat disrupts the delicate effects scientists want to preserve. That usually means large cryogenic systems are needed, making the materials costly and difficult to use outside the lab.
To build the new material, the LSU team started with a thin gold film on a glass chip and used focused ion beams to carve hundreds of tiny slits into it. Those engineered structures, which act like artificial atoms, form a crystal thinner than a human hair and let researchers control how the material responds to light.
The researchers said the crystal can sort light based on subtle quantum differences, not just on properties like color or brightness. According to lead researcher Omar S. Magaña-Loaiza, the material can distinguish quantum states and move them in a robust way without cryogenic cooling, which could open the door to more practical quantum technologies.
The team says the work could eventually support quantum computing, secure communications, sensitive sensors, and new energy technologies. They also described the material as the first room-temperature quantum material inherently sensitive to the quantum coherence of many-body systems.
