University of Minnesota
School of Physics & Astronomy

Condensed Matter Seminar

Friday, September 26th 2014
1:30 pm:
Speaker: Manas Kulkarni, The City University of New York, NYC College of Technology, USA.
Subject: Aspects of non-equilibrium many-body phenomena in quantum matter and light.

Non-equilibrium systems have been of tremendous interest both in physics
and engineering. Recent experimental breakthroughs in atomic, condensed
matter physics and optics have given birth to new paradigms for studying
out-of-equilibrium quantum systems. Understanding such phenomena require
an inter-disciplinary approach uniting ideas from these diverse fields.

For an isolated Bose gas, I will present a deep connection between the
Gross-Pitaevskii equation and Kardar-Parisi-Zhang universality class of
stochastic dynamics [1]. In a different scenario, an ensemble of atoms
placed in a leaky optical cavity and pumped with a laser constitutes an
exotic light-matter open quantum system. I will describe the
non-equilibrium aspects close to an interesting phase transition in such
driven-dissipative systems [2]. I will also propose protocols to prepare
light-mediated entangled states [3] of matter by optimally designing the
laser and cavity in other hybrid light-matter systems. Our work shows
that far-from-equilibrium many-body physics is a rich field where theory
and experiments across several disciplines thrive together.

[1] M. KULKARNI, A. Lamacraft, Phys. Rev. A 88, 021603, Rapid
Communication, M. KULKARNI, D. A. Huse, H. Spohn (2014) , M. KULKARNI,
J. Stat. Phys (invited article, 2014)

[2] M.KULKARNI, B. Oztop and H. E. Tureci, Phys. Rev. Lett, 111,
220408, M.KULKARNI, K. G. Makris and H. E. Tureci (2014)

[3] C. D. Aron, M. Kulkarni, H. E. Tureci, arXiv:1403.6474 (2014)

Faculty Host: Alex Kamenev

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