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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 (7)

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

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