Researchers realize coherent storage of light over one hour – Phys.org

Remote quantum distribution on the ground is limited because of the loss of photons in optical fibers. One solution for remote quantum communication lies in quantum memories: photons are stored in long-lived quantum memory (quantum flash drive) and then quantum information is transmitted by the transportation of the quantum memory. Given the speed of aircraft and high-speed trains, it is critical to increase the storage time of quantum memories to the order of hours.
In a new study published in…

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