visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2024-06-13 16:00 
연사  
장소 Zoom 

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 연사 제목
550 2023-05-19 11:00    (응집물리 세미나)Dipole condensations in Tilted Bose-Hubbard Chains
549 2015-10-14 18:00    인터스텔라 영화 속의 물리 file
548 2022-03-28 16:00    Ultimate-density atomic semiconductor via flat bands
547 2009-09-07 16:00    Physics Colloquium : 2009 Fall file
546 2018-11-08 16:00    Conformality lost file
545 2017-03-06 16:00    Spring 2017: Physics Colloquium file
544 2014-05-28 17:00    부품소재산업이 미래다
543 2022-11-25 11:00    [Update 세미나영상](응집물리 세미나) DMFT+ NRG: From models to real materials, from local to nonlocal correlations file
542 2022-03-21 16:00    Multi-wavelength Studies on Relativistic Jets from Gamma-ray Bright Active Galactic Nuclei
541 2023-03-16 16:00    (광학분야 세미나) Investigation of 3D cell mechanics using refractive-index tomography
540 2024-10-17 16:00    Photonic Methods for Quantum Levitodynamics Beyond the Rayleigh Regime
539 2018-08-01 11:00    Future of AI: Is the brain a computer? file
538 2022-09-23 11:00    [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions file
537 2020-09-11 14:00    SRC Seminar file
536 2023-03-17 11:00    (응집물리 세미나)Operando electron microscopy investigation of domain dynamics in twisted van der Waals materials file
535 2022-12-07 16:00    (광학분야 세미나) Non-Hermitian physics and non-Hermitian singularity
534 2022-05-02 16:00    What can we learn from the history of science and technology?(우리말강의)
533 2022-04-28 16:00    (광학분야 특별세미나)Adiabaticity and symmetry in optical waveguide design
532 2025-01-23 14:00  여영기 박사  Complete Polytype switching by super lubricant van der Waals cavity arrays file
531 2024-04-19 15:00    Engineering Physics for Semiconductor Equipment Innovation file