visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2024-06-13 16:00 
일시 June 13(Thur), 4:00pm 
장소 Zoom 
연사 Dr. Arjan Ferdinand van Loo (University of Tokyo) 

물리학과 야니스 교수 연구실/액시온 및 극한상호작용 연구단 (CAPP/IBS) 입니다.

아래 세미나에 관심 있으신 연구자들의 참석을 요청드립니다.

CAPP seminars will be held. Anyone interested in this topic is warmly welcome.

 

Speaker: Dr. Arjan Ferdinand van Loo (University of Tokyo)

 

Date: June 13, 2024 (Thursday) 

 

Time: 4:00 PM (KST)

 

Venue: Zoom Video Conference Seminar (Click the link below)

 

https://kaist.zoom.us/j/6108068959?pwd=TXV2OGlWdVRtcGhmNXVTRWlla2pHQT09

Meeting ID: 610 806 8959

Passcode: 131015

 

Topic: Simulation, design and fabrication of Josephson Parametric Amplifiers for axion search

 

Abstract:

Josephson parametric amplifiers (JPAs) are devices based on superconducting electronics and Josephson junctions that can amplify weak microwave signals with the added noise being limited by the laws of quantum mechanics. As such, these devices have been implemented in various developing quantum technologies, are routinely used in microwave quantum optics experiments, and can increase the efficiency of experiments focused on detecting weak signals, such as axion search experiments. By adjusting the geometry of the JPA in design, its figures of merit, such as the tunable bandwidth, instantaneous bandwidth, maximum gain and saturation power can be chosen. We show how to design for these parameters using a combination of classical finite-element simulations in COMSOL and numerical models based on the negative resistance model [1], and how to fabricate such devices in the cleanroom. We also show how a device with an increased nonlinearity can be used to generate on-demand itinerant non-classical states.

 

[1] K. M. Sundqvist and P. Delsing, Negative-resistance models for parametrically flux-pumped superconducting quantum interference devices, EPJ Quantum Technology 1, 6 (2014)

 

Seminar Poster_Arjan.jpg

 

번호 날짜 장소 제목
260 2018-06-18 10:00  E6-2. 2nd fl. #2502  Rydberg electromagnetically induced transparency and microwave-to-optical conversion using Rydberg atoms file
259 2017-06-02 14:30  E6-2. 1st fl. #1323  Quasiparticle Interference and Fourier transform scanning tunneling spectroscopy in WTe2 (Weyl semimetal) file
258 2017-06-02 16:00  #1323 (E6-2. 1st fl.)  Maxwell's demon in quantum wonderland file
257 2023-06-01 16:00  E6-2, #5301  Hall viscosity and topological phenomena
» 2024-06-13 16:00  Zoom  [CAPP seminars]Simulation, design and fabrication of Josephson Parametric Amplifiers for axion search file
255 2024-06-13 16:00  E6-2, #1323  Magnonic $\varphi$ Josephson junction and its non-Hermitian Josephson diode effect
254 2018-06-14 10:00  E6-2, 2nd fl. #2502  Phonons and polariton-like particles in trapped ions for quantum computation and quantum simulation file
253 2023-06-14 16:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  [CAPP seminar] EMC at CERN file
252 2016-06-14 15:00  #1323 (E6-2 1st fl.)  No-Insulation High Temperature Superconductor Magnet Technology for Compact, Reliable, and Low-Cost High Field DC Magnets
251 2023-06-14 16:00  E6-2, #2502  [High-Energy Theory Seminar]Vertex algebras and extended operators in 4d N=2 SCFTs
250 2023-06-15 16:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  [CAPP Seminar] Cryogenic electronics for ion traps file
249 2023-06-16 13:00  E6-2, #2502  Quantum critical states under extreme conditions
248 2019-06-17 10:30  #1323, E6-2  Chiral Spintronics file
247 2018-06-22 16:00  #1323, E6-2  Tuning functional properties of BiFeO3 films using strain and growth chemistry file
246 2018-06-22 16:00  #1323, E6-2  Tuning functional properties of BiFeO3 films using strain and growth chemistry file
245 2023-06-22 16:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  [CAPP Seminar] The muon g-2 puzzle file
244 2022-06-23 11:00  E6 Room(#1322)  JILA’s search for the electron’s Electric Dipole Moment (eEDM) to probe physics beyond the standard model file
243 2023-06-26 11:00  E6, Rm#1323  Quantum computing on magnetic racetracks with flying domain wall qubits
242 2019-06-27 14:00  #2502, E6-2  Gapless Kitaev Spin Liquid to Loop and String Gases file
241 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file