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Quantum channel for the transmission of information

Patent ·
OSTI ID:1174683
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Systems and methods are described for a quantum channel for the transmission of information. A method includes: down converting 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; changing a phase of at least a portion of the converged multi-color entangled photon beam to generate a first interferometric multi-color entangled photon beam; combining the first interferometric multi-color entangled photon beam with a second interferometric multi-color entangled photon beam within a single beam splitter; wherein combining includes erasing energy and momentum characteristics from both the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam; splitting the first interferometric multi-color entangled photon beam and the second interferometric multi-color entangled photon beam within the single beam splitter, wherein splitting yields a first output beam of multi-color entangled photons and a second output beam of multi-color entangled photons; and modulating the first output beam of multi-color entangled photons.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, L.L.C. (Oak Ridge, TN)
Patent Number(s):
6,678,054
Application Number:
10/226,164
OSTI ID:
1174683
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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