
Cavity Quantum Atom Optics: From Laser Cooled Atoms to Active NanoPhotonics
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 lightatom interactions. Moreover, I present our ongoing effort at Purdue to realize similar quantum phenomena at the single photon level using chipscale...

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 ChernSimons theory that describes the topological properties of the fractional quantum Hall states and an action a la bimetric gravity that...

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.

Understanding and Optimizing Exploratory Hydrothermal Reactions
22 Jan 2018  Online Presentations  Contributor(s): Alex Norquist
In this work, an alternative approach that uses machinelearning 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...

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 “thermodynamiclike” behavior – biomolecular motors...

DiffractionFree SpaceTime Wave Packets
30 Apr 2018  Online Presentations  Contributor(s): Hasan Esat Kondakci
In this talk, I will discuss a novel family of diffractionfree ultrafast light pulses that are localized both in time and one transverse dimension. Such pulses, dubbed spacetime wave packets, are a result of ‘classicallyentangled’ spatiotemporal spectra corresponding to more...

A Lightning Introduction to Nonequilibrium Statistical Physics
30 Apr 2018  Online Presentations  Contributor(s): Christopher Jarzynski
A brief and birds eye introduction to nonequilibrium 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...

Qsystems: 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...

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. ...

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 zerodimensional systems. Particularly, a spin1/2 particle, driven by two ellipticallypolarized light beams could...

Novel IIINitrides 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 latticematched AlInN/GaN and...

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....

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) twodimensional (2D) magnetic materials into graphene and topological materials to realize the quantum spin Hall effect or the...

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...

Topological Superconductivity and Majorana Bound State in Febased 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 Febased 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...