Patent ID: 11936779
Assignee: TRIARII RESEARCH LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A method for receiving secure transmission on a transmission link, comprising:
receiving at least one photon using receiving optics effective to receive output light of output optics from a light source;
using a beam splitter for receiving light from the receiving optics, where the at least one photon received is either transmitted by the beam splitter or reflected by the beam splitter;
using at least one polarization beam splitter for receiving the at least one photon to output at least one informative bit value;
transmitting the at least one photon through one of a plurality of physically separated delay media, each delay medium is characterized by a different, specified delay corresponding to one of a plurality of states associated with the at least one photon for encoding the at least one informative bit value; and
receiving the at least one photon by a device in a measured timing, where data comprising the at least one informative bit value is indexed by the measured timing.