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Optical microscope using an interferometric source of two-color, two-beam entangled photons

Patent ·
OSTI ID:1174947
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Systems and methods are described for an optical microscope using an interferometric source of multi-color, multi-beam entangled photons. A method includes: downconverting a beam of coherent energy to provide a beam of multi-color entangled photons; converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam; transforming at least a portion of the converged multi-color entangled photon beam by interaction with a sample to generate an entangled photon specimen beam; and combining the entangled photon specimen beam with an entangled photon reference beam within a single beamsplitter. An apparatus includes: a multi-refringent device providing a beam of multi-color entangled photons; a condenser device optically coupled to the multi-refringent device, the condenser device converging two spatially resolved portions of the beam of multi-color entangled photons into a converged multi-color entangled photon beam; a beam probe director and specimen assembly optically coupled to the condenser device; and a beam splitter optically coupled to the beam probe director and specimen assembly, the beam splitter combining an entangled photon specimen beam from the beam probe director and specimen assembly with an entangled photon reference 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):
6,762,844
Application Number:
09/938,843
OSTI ID:
1174947
Country of Publication:
United States
Language:
English

References (8)

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
Quantum Interferometric Optical Lithography: Exploiting Entanglement to Beat the Diffraction Limit journal September 2000

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