Submarines are excellent at avoiding detection. When submerged they are so far off the grid, in fact, that it’s difficult for them to stay in contact with the naval bases that supply them with orders and information, or for them to beam information back to base. But a new quantum communications solution could change all this, allowing submerged submarines to communicate via laser pulses by exchanging encryption keys and messages over satellites.
Quantum communication offers myriad advantages over conventional fiber optic networking, but manipulating electrons or photons to behave in the proper fashion has long kept quantum networking a "theoretical" pursuit. But University of Calgary researchers working with German colleagues at the University of Paderborn have pushed quantum networks a big step closer to reality by demonstrating that specially doped crystals can store and retrieve information encoded in entangled photons.
Manned Air Force jets and drones could soon send high quality video and audio by using ultra-high bandwidth lasers, transmitting critical battlefield data faster than ever. The Air Force Office of Scientific Research has conducted experiments that transmit data without interference across almost 22 miles, both in the air and on the ground.