visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-07-28 16:00 
일시 Jul. 28 (Thu.) 4PM 
장소 #1323(E6-2. 1st fl.) 
연사 Prof. Johannes Pollanen, Jerry Cowen Chair of Experimental Physics at Michigan State University 

Low Dimensional Electrons: On the Road to Hybrid Quantum Systems

 

Jul. 28 (Thu.) 4PM, #1323(E6-2. 1st fl.)

Prof. Johannes Pollanen, Jerry Cowen Chair of Experimental Physics at Michigan State University

 

Creating and controlling novel quantum states of matter is at the forefront of modern condensed matter physics. I will discuss two examples of this paradigm from my experiences studying two-dimensional(2d) electron systems. First, I will describe experiments on a class of 2d liquid crystalline states existing in semiconductor heterostructures. These fascinating states, known as quantum Hall nematics, exhibit a mysterious broken rotational symmetry in the 2d plane. We have found that engineering the device structure can experimentally control this symmetry; thereby demonstrating a unique technique for manipulating the orientation of these exotic quantum states. In the second part of my talk I will describe how high frequency surface acoustic waves(SAW) can be used to elucidate the properties of electronic states in two dimensions. Our recent experiments reveal the presence of a metastable conducting phase in the interior of a quantum Hall state. Finally, I will briefly remark on our efforts at the LHQS to create hybrid quantum systems composed of free electrons floating on the surface of liquid helium coupled to nanoscale structures or topological states of matter. These systems provide a unique platform for studying the fundamental physics of low dimensional electrons and their potential quantum computing applications.

 

Contact: CULTure Lab (h.choi@kaist.ac.kr)

번호 날짜 장소 제목
306 2024-01-03 11:00  E6-2, #1323  Interplay of Strong Correlations, Topology, and Disorder in 2D Quantum Matters
305 2022-01-11 15:00  E6 #1501  Ultrafast optical studies on CDW collective modes of the Weyl-CDW (TaSe4)2I file
304 2023-01-12 14:40  E6-2 #1323  JILA 1D Wannier-Stark optical lattice clock file
303 2022-01-17 14:00  E6-2 Room 2502  Five Lectures on Observational Probes of Dark Energy file
302 2022-01-18 14:00  KI bldg. 5th fl. Room B501 & Zoom  Data-driven interrogation of biological dynamics: from subcellular interactions to neuronal networks in vivo file
301 2022-01-25 15:00  E6 #1501/online  Emulating twisted double bilayer graphene with a multiorbital optical lattice file
300 2022-01-26 13:00  E6 #1501  An Introduction to Cohomology groups file
299 2019-01-07 15:00  E6-2. 2st fl. #2501  Many-Body Invariants for Multipoles in Higher-Order Topological Insulators file
298 2024-01-16 14:00  E6-2, #1323  Dimer Physics and Superconductivity in La3Ni2O7
297 2021-01-28 15:00  Zoom  Topological Transport of Deconfined Hedgehogs in Magnets file
296 2021-01-28 18:00  Online Seminar  Quantum metamaterials: concept, theory, prototypes and possible applications file
295 2019-01-09 16:00  E6-2. 2nd fl. #2501  Molecular Mott state in the deficient spinel GaV4S8 file
294 2020-01-17 16:00  #1323, E6-2  Symmetry Breaking and Topology in Superfluid 3He file
293 2019-01-23 16:00  Rm. C303, Creation Hall (3F), Munji Campus  Ultrasensitive Microwave Bolometer: Opportunity for Axion Detectors file
292 2023-07-14 11:00  E6-2 #1501  Interfaces engineering of thin film oxides
291 2019-07-03 15:00  E6-2, 2501  Many-body quantum electrodynamis (QED) with atoms and photons: A new platform for quantum optics" file
290 2016-07-07 14:00  #1323(E6-2. 1st fl.)  Let there be topological superconductors
289 2016-07-08 11:00  #1323(E6-2. 1st fl.)  Isostatic magnetism
288 2016-07-08 14:00  #1323(E6-2. 1st fl.)  Electronic quasiparticles in the quantum dimer model
287 2022-07-14 13:30  E6 #1501 & Zoom  Electronic structure and anomalous transport properties of topological materials by first principle calculation