
ALT ⏳ **Scientists Have Discovered a Quantum System That Can Evolve in Opposite Directions of Time** What if time could move in two opposite directions inside a quantum system? It sounds impossible, but a physicist may have found a way to explore exactly this strange possibility. Physicist Tai Hyun Yoon from Korea University has developed a theoretical framework for a special quantum bit called a time qubit. It uses single photons (particles of light) to explore two opposite directions of quantum evolution. Even more fascinating, the researcher found that an experiment conducted back in 2018 had already produced measurements that could support this new idea. In other words, an older experiment may have revealed something scientists did not recognize at the time. The secret lies in controlling the quantum interaction using light. By changing the phase of the light, researchers can reverse part of the mathematical process governing how the quantum system evolves.






























