2017 Fall Physics Colloquium Series: Eric Bittner, Ph.D.

DateNovember 15, 2017Time4:00 - 5:00 pm
LocationBaylor Sciences Building, Room E.125
Description
2017 Fall Physics Colloquium Series

Dr. Eric Bittner, FRSC
John and Rebecca Moores Professor of Chemical Physics
Department of Chemistry
University of Houston

Spectroscopy with Entangled Photons: Putting the Quantum Back into the Photon

We generally agree that photons are quantum mechanical particles, yet most of the time we simply treat their interaction with matter as if they are classical fields described by Maxwell equations and set their quantum-ness aside. This is an important and productive assumption, widely used to describe the linear and non-linear response of a material system to the radiation field, we argue that novel spectroscopic measures based upon the interference of entangled photons can lead to important insights and novel ways to extract many-body correlations from a system. In my seminar I shall discuss recent experimental work by Kravitski and co-workers that demonstrate that time-scales as fast as 100fs can be probed by measuring the interference of entangled photon pairs in a Hong-Om-Mandel (HOM) interferometer. [1] We recently proposed an input-output formalism that entangles the internal dynamics of material Hamiltonian (Dicke model) to the photon reservoir in a HOM device. We show that subtle details of quantum phase transitions and many-body correlations in a Bose condensate may be directly and easily probed using a broad-band and continuous wave laser sources. [2]

[1] Kalashnikov et al, Sci Rep. 7, 11444 (2017)
[2] Li, et al Quantum Sci. and Tech (in press, 2017)

For more information contact: Dr. Anzhong Wang 254-710-2276
PublisherPhysics
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