Researchers harness ordinary light to perform quantum computing at room temperature

Louisiana State University researchers have shown that ordinary laser light can perform robust quantum information processing at room temperature. Using photon-counting techniques, they extracted hidden quantum behavior from bright classical light, creating a system with 861 measurable components. The platform tolerates noise and loss, simulating complex quantum dynamics and learning mathematical functions without requiring perfectly isolated quantum states.

Rather than requiring perfectly isolated and extremely fragile quantum systems, we show that useful quantum behavior can be extracted from ordinary classical light, even in the presence of substantial noise and loss.