Hybrid integrated source of polarization-entangled photons

Details Hybrid integrated source of polarization-entangled photons Hybrid integrated source of polarization-entangled photons

2007-09-11

2009-02-10

Sanghavi, Hemang (Department: 2874)

Optical: systems and elements

Optical frequency converter

C359S332000, C372S021000

Reexamination Certificate

active

07489436

ABSTRACT:
Various embodiments of the present invention are directed to systems configured to generate polarization-entangled photons. In one embodiment of the present invention, a polarization-entangled photon source comprises a down conversion crystal having a first waveguide and a second waveguide, a dielectric spacer positioned adjacent to the down conversion crystal and configured to receive electromagnetic radiation emitted from the first waveguide, and a half-wave plate positioned adjacent to the down conversion crystal and configured to receive electromagnetic radiation emitted from the second waveguide. The polarization-entangled photon source also includes a beam displacer positioned adjacent to the dielectric spacer and the half-wave plate and configured to combine the electromagnetic radiation output from the dielectric spacer and the half-wave plate into a single beam of electromagnetic radiation.

REFERENCES:
patent: 6862130 (2005-03-01), Batchko et al.
patent: 2008/0063015 (2008-03-01), Trifonov et al.

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