Session:
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Labs/Apparatus
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Paper Type:
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Poster
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Title:
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Delayed-Choice Interference Experiment for the Entangled-Photon Undergraduate Laboratory*
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Meeting:
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2018 Summer Meeting: Washington, DC |
Location:
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N/A |
Date:
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Time:
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9:15PM
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Author:
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Enrique J. Galvez,, Colgate University,
3152287205, egalvez@colgate.edu
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Co-Author(s):
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Jhonny Castrillon,, Boris A. Rodriguez,, Omar Calderon-Losada,
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Abstract:
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We have developed a new undergraduate laboratory experiment with time-energy entangled photons that exploits the concept of delayed choice in quantum interference. Photon pairs produced by parametric down-conversion are entangled in energy and momentum. One photon is sent through a Mach-Zehnder interferometer. It reaches a detector immediately after exiting the interferometer. The energy-entangled partner is sent through a long optical fiber to an energy filter followed by a detector. The delayed-choice of filter bandwidth determines whether one sees interference or not. The experiment involves adding only a few optical components to an existing correlated-photon undergraduate laboratory. The experiment makes the students confront fundamental concepts of quantum interference.
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Footnotes:
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*NSF grant PHY-1506321
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Presentation:
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sm2018_GalvezDelayedChoicePoster.pdf
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