Purdue University Physics Seminars

By Joseph M. Cychosz

Network for Computational Nanotechnology, Purdue University, West Lafayette, IN

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Abstract

A collection of seminars present in either Purdue University Department of Physics' General Colloquia or Condensed Matter Seminar Series.

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Researchers should cite this work as follows:

  • Joseph M. Cychosz (2012), "Purdue University Physics Seminars," https://nanohub.org/resources/11205.

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Location

Purdue University, West Lafayette, IN

In This Series

  1. Cavity Quantum Atom Optics: From Laser Cooled Atoms to Active Nano-Photonics

    08 Feb 2018 | Online Presentations | Contributor(s): Mahdi Hosseini

    In this talk I present results from the MIT experiment demonstrating coherent manipulation of atomic and optical states based on cQED light-atom interactions. Moreover, I present our ongoing effort at Purdue to realize similar quantum phenomena at the single photon level using chip-scale...

  2. Bimetric Theory of Fractional Quantum Hall States

    29 Nov 2017 | Online Presentations | Contributor(s): Andrey Gromov

    In this talk, I will motivate and describe the recently developed bimetric theory of fractional quantum Hall states. This effective theory includes the Chern-Simons theory that describes the topological properties of the fractional quantum Hall states and an action a la bimetric gravity that...

  3. Ultrafast Microscopy of Energy and Charge Transport

    21 Dec 2017 | Online Presentations | Contributor(s): Libai Huang

    In my talk, I will focus on our recent progress on visualization of exciton and charge transport in  solar  cell materials.

  4. Understanding and Optimizing Exploratory Hydrothermal Reactions

    22 Jan 2018 | Online Presentations | Contributor(s): Alex Norquist

    In this work, an alternative approach that uses machine-learning algorithms trained on reaction data to predict reaction outcomes for the crystallization of templated vanadium selenites is demonstrated. Archived ‘dark’ reactions, both failed and successful attempts at hydrothermal...

  5. Scaling Down the Laws of Thermodynamics

    30 Apr 2018 | Online Presentations | Contributor(s): Christopher Jarzynski

    Thermodynamics provides a robust conceptual framework and set of laws that govern the exchange of energy and matter. Although these laws were originally articulated for macroscopic objects, nanoscale systems often exhibit “thermodynamic-like” behavior – biomolecular motors...

  6. Diffraction-Free Space-Time Wave Packets

    30 Apr 2018 | Online Presentations | Contributor(s): Hasan Esat Kondakci

    In this talk, I will discuss a novel family of diffraction-free ultrafast light pulses that are localized both in time and one transverse dimension. Such pulses, dubbed space-time wave packets, are a result of ‘classically-entangled’ spatio-temporal spectra corresponding to more...

  7. A Lightning Introduction to Non-equilibrium Statistical Physics

    30 Apr 2018 | Online Presentations | Contributor(s): Christopher Jarzynski

    A brief and birds eye introduction to non-equilibrium statistical physics. This tutorial is organized around the 1st and 2nd laws of thermodynamics. It begins with brief review how the 1st and 2nd laws apply to macroscopic systems in the context of old fashion 19th century thermodynamics with...

  8. Q-systems: Discrete Integrability and Cluster Algebras

    14 May 2018 | Online Presentations | Contributor(s): Rinat Kedem

    I’ll introduce a family of remarkable recursion relations, originally found in the context of the Bethe ansatz of generalized Heisenberg modules and quantum groups. I will reconsider this system as a discrete integrable system in its own right, and show some of the remarkable properties...

  9. Quantum Effects in Electromagnetics and Computational Electromagnetics

    20 Jun 2018 | Online Presentations | Contributor(s): Weng Cho Chew

    In this talk, we begin by discussing quantum effects related to electromagnetics, such as spontaneous emission, Casimir force, quantum transport in devices, and quantum dissipations. Many of these effects have strong bearing on the future of quantum technology development. ...

  10. From Driven Systems to Topological Quantum Machines: 2d Floquet and Topological Energy Pumping

    21 Jun 2018 | Online Presentations | Contributor(s): Gil Refael

    In my talk I will show how applying multiple periodic drives to a quantum system could increase its dimensionality, and may even realize a multidimensional topological phases for zero-dimensional systems. Particularly, a spin-1/2 particle, driven by two elliptically-polarized light beams could...

  11. Novel III-Nitrides Materials for Infrared Optoelectronics: Growth, Structure and Properties

    26 Sep 2018 | Online Presentations | Contributor(s): Oana Malis

    I will describe our recent work to understand, model, and control the fundamental mechanisms of light absorption and electrical transport in nitride nanostructures. Special attention is given to the relationship between growth, structure, and optical properties in lattice-matched AlInN/GaN and...

  12. Indirect Dissociative Recombination of Light Ions

    29 Oct 2018 | Online Presentations | Contributor(s): Roman Čurík

    Dissociative recombination (DR) is a process is which a free electron with a positive kinetic energy is captured by a molecular ion while breaking one or several chemical bonds,e− + AB+ → A + B .This is a very efficient chemical process, but is rarely described in chemical textbooks....

  13. DFT Studies of Spin Orbit Coupling in Spintronics Materials

    29 Oct 2018 | Online Presentations | Contributor(s): Ruqian Wu

    In this talk, I will discuss   how to effectively imprint the exchange and spin orbit coupling (SOC) of adatoms and newly discovered van der Waals (vdW) two-dimensional (2D) magnetic materials into graphene and topological materials to realize the quantum spin Hall effect or the...

  14. Quantum Hall Transitions: Exact Results, Conjectures, and Numerical Tests

    07 Nov 2018 | Online Presentations | Contributor(s): Ilya Gruzberg

    In this talk I will review a number of recent results, analytical as well as numerical, on critical behavior near the integer quantum Hall transition and its cousins in other symmetry classes. The results include exact properties of the multifractal spectrum of critical wave functions obtained...

  15. Topological Superconductivity and Majorana Bound State in Fe-based Superconductors

    12 Nov 2018 | Online Presentations | Contributor(s): Hong Ding

    In this talk I will report our recent discoveries of topological superconductivity and Majorana bound state in Fe-based superconductor Fe(Te, Se). We have obtained convincing ARPES evidence of superconducting topological surface state of Fe(Te, Se) single crystal with Tc ~ 14.5K. By using...