Patent ID: 11962353
Assignee: QUBIT MOVING AND STORAGE, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 22:
23. A system for identifying entangled photons, the system comprising:
a) an entangled photon source that generates a plurality of sets of four entangled photons wherein each of the four entangled photons appear at an output at a same time and wherein a pair of photons in each of the plurality of sets of four entangled photons are time correlated indicating that another pair of photons in a same one of each of the plurality of sets of four entangled photons are time correlated; and
b) a coincidence detector having at least one input optically coupled to the output of the entangled photon source, the coincidence detector determining coincidences of a pair of photons of at least some of the plurality of sets of four entangled photons and generating heralding signals at an output related to determined coincidences; and
c) a photon detector having at least one input optically coupled to the output of the entangled photon source and an input connected to the output of the coincidence detector, the photon detector determining a state value of at least one of the other pair of photons of at least some of the plurality of sets of four entangled photons based on at least one of the generated heralding signals.