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Title: Quantum walk of light in frequency space and its controlled dephasing
Authors: Pandey, Deepak
Satapathy, Nandan
Meena, M.S.
Ramachandran, Hema
Keywords: Optical implementations of quantum information processing and transfer
Random walks and Levy flights
Issue Date: Oct-2011
Publisher: The American Physical Society
Citation: Physical Review A, 2011, Vol.84, 042322
Abstract: We implement, using a coherent source, a coined quantum walk of light in frequency space in a tabletop experiment utilizing a series of modified Michelson interferometers that incorporate polarization optics and acousto-optic modulators. Manipulating the phase of the radio frequency that governs the acousto-optic interaction, we achieve symmetric or asymmetric quantum walks. Introducing rapid random phase shifts electronically, while regulating the amplitude, we cause controlled dephasing and thus simulate a gradual transition from the quantum walk to the classical random walk.
Description: Open Access
ISSN: 1050-2947
1094-1622 (Online)
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Copyright: 2011 The American Physical Society
Appears in Collections:Research Papers (LAMP)

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