What's amazing about this case is that all of the quantum states were maintained as well. The light maintained entanglement with other photons. This is not something that could happen by simply storing information and retrieving it later.

Currently, quantum encryption setups require a fiber optic cable to reach all the way from the sender to the recipient, because repeaters would destroy the entanglement. But with this device, you could store the data in a Bose-Einstein condensate, ship it to the destination, then read the data back out.