Louisiana State University researchers have demonstrated a new class of room-temperature quantum materials called quantum statistical plasmonic metacrystals, published in Nature. Built from arrays of gold nanoantennas, these structures create 'allowed' and 'forbidden' statistical bands that selectively transmit or suppress light based on its quantum statistical properties — not conventional attributes like color or polarization. Testing 13 different multiphoton light sources, the team showed that light in forbidden statistical bands is shifted toward allowed states, while light in allowed bands passes through unchanged. The approach works at room temperature without cryogenic cooling and could have long-term implications for photonic quantum computing, quantum communications, and coherence-sensitive energy harvesting. The work is an early experimental demonstration and not yet a practical device.
