Patent ID: 11933608
Assignee: QUBIT MOVING AND STORAGE, LLC
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 13:
14. A method for identifying three entangled photons, the method comprising:
a) generating a set of first, second, and third entangled photons that are correlated in time;
b) interfering the first and second entangled photons based on a difference between a first optical path from an output of an optical source that generates the first entangled photon to a first optical input to an interferometric beam splitter and a second optical path from an output of the optical source that generates the second entangled photon to a second input of the interferometric beam splitter;
c) generating a first electrical signal in response to detection of a first photon generated by the interfering of the first and second entangled photons;
d) generating a second electrical signal in response to detection of a second photon generated by the interfering of the first and second entangled photons;
e) generating a third electrical signal in response to detection of the third entangled photon; and
f) determining a first photon coincidence from the first electrical signal, the second electrical signal, and the third electrical signal, thereby identifying three entangled photons.