System and method of detecting entangled photons

Details System and method of detecting entangled photons System and method of detecting entangled photons

2004-05-21

2009-10-27

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

By comparison

C356S036000, C356S484000

Reexamination Certificate

active

07609382

ABSTRACT:
A system and method of detecting entangled photon pairs, each pair including a signal photon and an idler photon, is disclosed. Entangled photon pairs are provided having an entanglement time and an entanglement area selected to substantially increase an associated entangled two-photon cross-section of an associated target medium. The entangled photon pairs are also selected to have an energy distribution between the signal photon and the idler photon to substantially decrease an associated random two-photon absorption cross section of the target medium. The entangled photon pairs are directed to the target medium, and at least one entangled-photon pair being absorbed by the target medium is detected.

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