visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2021-06-11 14:30 
일시 Jun. 11 (Fri.), 02:30 PM 
장소 Online seminar 
연사 Dr. Jin Woong Cha(KRISS) 

 

SRC Seminar

 

 

Engineering sound waves and vibrations in multi-mode nanomechanical systems

 

Dr. Jin Woong Cha

Quantum Technology Institute, KRISS

 

Jun. 11 (Fri.), 02:30 PM

Online seminar

https://kaist.zoom.us/j/89283252628
회의 ID: 892 8325 2628

암호: 916514

 

 

 

 

Abstract:

Nanoscale mechanical systems provide versatile physical interfaces with their ability to interact with various physical states, for example, electromagnetic fields (e.g., microwaves and optical light) and quantum states (e.g., spins and electrons). Therefore, engineering nanoscale sound waves and vibrations in nanomechanical systems is essential for a wide range of applications in sensing and information processing both in the classical and quantum regimes. My talk will focus on two different nanomechanical platforms I have recently worked on. In the first part of my talk, I will discuss a unique nanomechanical platform called nanomechanical lattices which enable electrically tunable phonon propagation dynamics [1] and topologically protected phonon transport [2] at MHz frequencies. This platform consists of arrays of mechanically coupled, free-standing silicon-nitride nanomechanical membranes that support propagating flexural elastic waves. For the second part of my talk, I will describe our recent studies on the cavity electromechanics in a superconducting nanoelectromechanical resonator implementing superconducting niobium [3]. This system demonstrates various optomechanical phenomena arising from the interaction of nanomechanical motions and microwave fields (e.g., phonon cooling and amplification, optomechanically induced reflection) and can be used in various applications such as quantum transducers. I will then conclude my talk by briefly describing our ongoing work at KRISS.

 

Reference:

[1] J. Cha, et al. Nature Nanotechnology 13, 1016-1020 (2018)

[2] J. Cha, et al. Nature 564, 229-233 (2018)

[3] J. Cha, et al. Nano Letters 21, 1800-1806 (2021)

 

 

Contact: SunYoung Choi, (sun.0@kaist.ac.kr)

Center for Quantum Coherence in Condensed Matter, KAIST

 

번호 날짜 장소 제목
공지 2022-10-24 16:00  E6 #1501(공동강의실)  Physics Colloquim(Fall 2022)
공지 2022-09-21 10:30  E6-1 #1501  [Update 세미나 영상] Distinguished Lecture 'The Magic of Moiré Quantum Matter' Prof. Pablo Jarillo-Herrero(Department of Physics, MIT)
공지 2022-11-11 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid
공지 2022-10-28 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates
공지 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer
공지 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions
공지 2022-09-22 11:00  E6-1 #1323  2022 가을학기 응집물리 및 광학 세미나 전체 일정
273 2016-01-26 14:00  E6-2, #1323  Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
272 2019-03-29 14:30  E6-2. 1st fl. #1323  Epitaxial Multifunctional Oxide Thin Films for Novel Electronics file
271 2018-06-01 11:00  E6-2. 1st fl. #1323  Topological phases in low-dimensional quantum materials file
270 2019-10-29 16:00  #1323 (E6-2, 1st fl.)  Particles and Gravity via String Geometry file
269 2018-04-09 11:00  E6-2. 1st fl. #1323  Doublon-holon origin of the subpeaks at the Hubbard band edges file
268 2019-10-31 10:00  #1323 (E6-2, 1st fl.)  Kondo meets Hubbard: Impurity physics for correlated lattices file
267 2022-06-10 14:30  E6-2. 1st fl. #1323  Combinatorial strategy for condensed matter physics: study on rare earth hexaborides thin films file
266 2020-02-13 16:30  E6-6, #119  Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
265 2019-11-20 16:00  #5302, E6-2  Correlation between superconducting transition temperature and critical current density in irradiated iron-based superconductors file
264 2019-11-05 16:00  #1323, E6-2  Study on nanomaterials by the development of ultrahigh resolution laser-photoelectron microscopy (PEEM) file
263 2021-12-03 14:30  Zoom webinar  Topological Spin Textures: Skyrmions and Beyond file
262 2019-04-26 16:00  #1323, E6-2  Robust Quantum Metrology using Strongly Interacting Spin Ensembles and Quantum Convolutional Neural Network file
261 2022-11-24 16:00  E6-2 #1323 & Zoom  Probing fundamental physics by mapping the mm and sub-mm sky
260 2016-10-07 13:30  E6-2. #1323(1st fl.)  “Symmetry and topology in transition metal dichalcogenide?”
259 2022-10-26 10:00  E6-2 #2502  Replica Higher-Order Topology of Hofstadter Butterflies in Twisted Bilayer Graphene
258 2016-11-29 16:00  #1323(E6-2. 1st fl.)  Symmetry Protected Kondo Metals and Their Phase Transitions
257 2017-11-03 16:00  #1323 (1st fl., E6-2.)  Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions file
256 2022-07-14 15:00  E6 #1501 & Zoom  Pure two-dimensional quantum electron liquid and its phase transition
255 2022-09-30 14:30  E6-2. 1st fl. #1323 & Zoom  Putting a spin on the Josephson effect file
254 2018-04-13 10:00  #1323 (E6-2, 1st fl.)  Quantum meets Mechanics: from Quantum Information to Fundamental Research file