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Title: Interferometric source of multi-color, multi-beam entangled photons with mirror and mixer

Patent ·
OSTI ID:1174878

53 Systems and methods are described for an interferometric source of multi-color, multi-beam entangled photons. An apparatus includes: a multi-refringent device optically coupled to a source of coherent energy, the multi-refringent device providing a beam of multi-color entangled photons; a condenser device optically coupled to the multi-refringent device, the condenser device i) including a mirror and a mixer and ii) converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam; a tunable phase adjuster optically coupled to the condenser device, the tunable phase adjuster changing a phase of at least a portion of the converged multi-color entangled photon beam to generate a first interferometeric multi-color entangled photon beam; and a beam splitter optically coupled to the condenser device, the beam splitter combining the first interferometeric multi-color entangled photon beam with a second interferometric multi-color entangled photon beam.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
6,744,518
Application Number:
09/939,303
OSTI ID:
1174878
Country of Publication:
United States
Language:
English

References (6)

Experimental violation of Bell’s inequality based on phase and momentum journal May 1990
Experimental quantum teleportation journal December 1997
Interfering entangled photons of different colors journal March 1993
Two-color photons and nonlocality in fourth-order interference journal May 1990
Quantum Communication With A 2-bit Message Coding For Each Transmitted Photon conference January 1997
Bell-state preparation using pulsed nondegenerate two-photon entanglement journal May 2001