Persistent quantum beats and long-distance entanglement from waveguide-mediated interactions.
Abstract
We study photon-photon correlations and entanglement generation in a one-dimensional
waveguide coupled to two qubits with an arbitrary spatial separation. To treat the
combination of nonlinear elements and 1D continuum, we develop a novel Green function
method. The vacuum-mediated qubit-qubit interactions cause quantum beats to appear
in the second-order correlation function. We go beyond the Markovian regime and observe
that such quantum beats persist much longer than the qubit lifetime. A high degree
of long-distance entanglement can be generated, increasing the potential of waveguide-QED
systems for scalable quantum networking.
Type
Journal articlePermalink
https://hdl.handle.net/10161/26468Published Version (Please cite this version)
10.1103/physrevlett.110.113601Publication Info
Zheng, Huaixiu; & Baranger, Harold U (2013). Persistent quantum beats and long-distance entanglement from waveguide-mediated interactions.
Physical review letters, 110(11). pp. 113601. 10.1103/physrevlett.110.113601. Retrieved from https://hdl.handle.net/10161/26468.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Show full item recordScholars@Duke
Harold U. Baranger
Professor of Physics
The broad focus of Prof. Baranger's group is quantum open systems at the nanoscale,
particularly the generation of correlation between particles in such systems. Fundamental
interest in nanophysics-- the physics of small, nanometer scale, bits of solid-- stems
from the ability to control and probe systems on length scales larger than atoms but
small enough that the averaging inherent in bulk properties has not yet occurred.
Using this ability, entirely unanticipated phenomena ca

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