ENTANGLED, SPATIALLY DISTRIBUTED QUANTUM SENSOR NETWORK ENHANCED BY PRACTICAL QUANTUM REPEATERS

摘要

An entangled, spatially distributed, quantum sensor network enhanced by quantum repeaters includes a probe-state generator for generating M entangled light fields, where M is an integer greater than one. The quantum sensor network also includes M spatially distributed sensor modules that communicate with the probe-state generator to receive the M entangled light fields, respectively, and conduct a measurement therewith. The quantum sensor network also includes one or more quantum repeaters, each of which is (a) located in a propagation channel of a respective one of the entangled light fields to its corresponding sensor module from the probe-state generator, and (b) includes a plurality of quantum scissors to amplify the entangled light field to at least partly compensate for loss in the propagation channel.