Guang-Can Guo

A tiny crystal doped with europium acts like a mailbox for light: it captures pulses and stores them with almost no loss. Efficiency reached 80% for laser flashes and 70% for single photons. The device holds up to 20 light patterns at once, bringing quantum internet closer.

Twisted light beams formed an artificial lattice, like a maze with controllable losses. For the first time, physicists directly observed how the wave's color composition changes in such a system, revealing unexpected mergers of different states. This sheds light on the operation of lasers, sensors,

Scientists launched the first large quantum network connecting 200 users over distances up to 200 km. The secret of protection lies in the behavior of two photons at a half-silvered mirror: if they are perfectly identical, they always go through together. It's like a turnstile that opens only for a

Physicists have for the first time produced up to 100,000 photons in a precisely defined quantum state – hundreds of times more than before. Using virtual lenses, they correct distortions and reduce operation time as the number of particles increases. The method paves the way for ultra-sensitive sen