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NITheP Seminar by Dr. Changhyoup Lee "Few Photon Transport in Many-Body Photonic Systems: A Scattering Approach"

Dr. Changhyoup Lee, Centre for Quantum Technologies, National University of Singapore
When Sep 18, 2015
from 11:30 AM to 12:30 PM
Where NITheP Seminar Room, 3rd floor, H Block
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NITheP cordially invites you to a seminar by:

Dr. Changhyoup Lee

Centre for Quantum Technologies, National University of Singapore

Dates: Friday, 18h September 2015
Time: 11h30 – 12h30
Venue: NITheP Seminar Room, H-Block, 3rd Floor

Title: Few Photon Transport in Many-Body Photonic Systems: A Scattering Approach

Abstract: I will talk about the quantum transport of multi-photon Fockstates in one-dimensional Bose-Hubbard lattices implemented in QED cavity arrays (QCAs). In recent work we proposed an optical scheme toprobe the underlying many-body states of these systems by analyzing the properties of the transmitted light using scattering theory. To this end, we employed the Lippmann-Schwinger formalism within which an analytical form of the scattering matrix can be found. The latter is evaluated explicitly for the two particle/photon-two site case. The results indicate that the underlying structure of the many-body states of the model in question can be directly inferred from the physical properties of the transported photons in its QCA realization. We find that a fully-resonant two-photon scattering scenario allows a faithful characterization of the underlying many-body states, unlike in the coherent driving scenario usually employed in quantum Master equation treatments. Our method is general and can be applied to probe the structure of any many- body bosonic models amenable to a QCA implementation including the Jaynes-Cummings-Hubbard, the extended Bose-Hubbard as well as a whole range of spin models.

Coffee and biscuits will be served at 11h00

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