visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-05-16 16:00 
연사  
장소 #1323(E6-2, 1st Fl.) 

Tuning microwave cavities with biased nonlinear dielectrics for axion searches

 

May 16, 2016 (Mon) 4PM,  #1323(E6-2, 1st Fl.)

Dr. Daniel Bowring , Fermi National Accelerator Laboratory

 

The search for dark matter axions may be aided by haloscopes: tunable, passive, high-Q microwave resonators, placed inside multi-tesla magnetic fields and operating at cryogenic temperatures. (The Axion Dark Matter eXperiment, ADMX, is an example of this technique.) In the presence of strong B-fields, axions may couple to two photons, which in turn may be detected through the resonant excitation of the high-Q microwave cavity and subsequent low-noise amplification and readout. There are points of common interest, then, between experiments like ADMX and the particle accelerator technology community. This talk addresses several of these common points, with an emphasis on tuning strategies. Axion searches above ~1 GHz will employ multiple resonators locked to the same frequency. Fine tuning of individual resonators may be accomplished using thin films of strontium titanate (STO) and related materials, whose dielectic strength can be varied through DC voltage bias.

 

Contact: T.8166(CAPP Administration Office)

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
245 2015-11-10 16:00    Rapid heating of matter using high power lasers
244 2022-11-10 16:00    Probing the Origin of Cosmic Infrared Background and Future Prospects with SPHEREx
243 2023-02-28 11:00    Topotactic redox engineering toward novel material file
242 2018-10-16 10:00    Capturing protein cluster dynamics and gene expression output in live cells file
241 2025-04-29 16:00  Dr. Tokuro Shimokawa (Okinawa Institute of Science and Technology)  Can experimentally-accessible measures of entanglement distinguish quantum spin liquid and random singlet phases? file
240 2018-06-18 10:00    Rydberg electromagnetically induced transparency and microwave-to-optical conversion using Rydberg atoms file
239 2025-05-28 16:00  Dr. Thiago L. M. Guedes (Forschungszentrum Jülich)  Computing the graph-changing dynamics of loop quantum gravity file
238 2019-03-29 16:00    Coherent Quantum Control and Magnetism on atoms – Trapped ion and ESR STM file
237 2023-09-26 16:00    [High Energy Theory Seminar]A new step in interacting dark sector cosmologies
236 2016-03-11 16:00    Jan. Switching handedness of of chiral solitons in Z4 topological insulators
235 2021-04-02 14:30    Quantum computing and entanglement generation using trapped ions and photons
234 2021-05-14 14:30    Electrically tunable spin valve effect in vertical van-der-Waals magnetic tunnel junctions file
233 2015-11-28 10:00    Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier
232 2022-05-11 16:00    Gravity as a phenomenon in quantum dynamics
231 2022-05-25 16:00    Uncovering New Lampposts for Dark Matter: Continuum or Conformal
230 2019-05-01 16:00    Raman and x-ray scattering study on correlated electron systems: two case examples file
229 2018-04-13 10:00    Quantum meets Mechanics: from Quantum Information to Fundamental Research file
228 2022-09-30 14:30    Putting a spin on the Josephson effect file
227 2022-07-14 15:00    Pure two-dimensional quantum electron liquid and its phase transition
226 2017-11-03 16:00    Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions file