Quantum Multiplexing

Multiplexing is an extremely well-established technique in the telecommunication industry [1] allowing multiple independent massages generated by multiple users to share a common transmission line. It works by the multiplexer dividing the capacity of the communication channel into a number of ‘logical’ channels which allow each of the users signal to be transmitted before a demultiplexer extracts them. There are various forms of it including space-division, frequency-division, time-division, code-division multiplexing to mention a few. Recently new form of ‘telecommunication’ has arisen. The principle of quantum mechanics and their associated quantum technologies [2] allow new forms of communication governed by superposition/entanglement and it is an open question as to where multiplexing will fit into it. Further those quantum principles may allow new forms of multiplexing unavailable to the classical world.