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
566 2024-10-31 13:00  E6-2 / Rm. 3441  Mini-workshop on first-principles DFT methods and applications
565 2024-10-30 14:30  E6-2, #3441  [Seminar Invitation] Mario Cuoco (CNR-SPIN, c/o University of Salerno, Fisciano, Italy) / 2024.10.30. 14:30 / E6-2, #3441
564 2024-10-21 13:00  E6-2 #3441  [Physics Seminar] “Non-Hermitian Point-Gap Topology in Junction Systems” file
563 2024-10-17 16:00  온라인 (https://kaist.zoom.us/j/89289652931?pwd=eNz6xnTFrEMGXYj9fXpdBJsW9fEpJX.1)  Photonic Methods for Quantum Levitodynamics Beyond the Rayleigh Regime
562 2024-10-14 11:00  KI Building(E4), Matrix Hall(2nd Floor)  [RSVP, Oct 14th Mon] Ambassador of Hungary to Republic of Korea Special Lecture file
561 2024-10-02 12:00  E6-2, #3441  Data-driven discovery of neural computations through brain-wide and cell-type-specific dynamical systems file
560 2024-09-26 14:00  KAIST, Physics Bldg. (E6-2) / (Rm. 3441)  Quantum spin nematic phase in a square-lattice iridate
559 2024-09-03 12:00  자연과학동(E6-2) 1323  2024 가을학기 물리학과 특별세미나 전체 일정 (응집물리 및 광학분야) file
558 2024-09-02 16:00  자연과학동 1501호(공동강의실)  2024학년도 가을학기 물리학과 콜로키움(Physics Colloquium) file
557 2024-08-22 16:00  RM #C303, Creation Hall (3F), KAIST Munji Campus  [CAPP seminar] Development of a 12-20 GHz CO Intensity Mapping Receiver for Capturing the Star-formation History in the Early Universe file
556 2024-08-16 11:00  E6 1322 (no zoom broadcasting)  Cathodoluminescence for nanophotonics: Applications to plasmonic bandgap materials and perovskite semiconductors file
555 2024-08-14 11:00  E6, #3441  Pair Density Waves and Supercurrent Diode Effect in Altermagnets
554 2024-07-25 16:00  Rm. 3441, E6-2 (Advanced Physics Lecture Hall)  Generation and Certification of Optical Quantum States for Information Processing file
553 2024-07-23 16:00  KI Building(E4) Matrix Hall(2F)  Spin Conversion Research Towards Novel Spintronic Functionalities file
552 2024-07-22 14:00  E6-2 #3441  Nonthermal electronic orders in photo-doped Mott insulators
551 2024-07-18 11:00  E6-2 #1323  Acousto-electric non-local detection of magnon-phonon coupling
550 2024-07-10 16:00  E6-2 #2502  [High Energy Theory Seminar] The Weak Gravity Conjecture in Perturbative String Theory
549 2024-07-03 16:00  E6-2 #2502  [High Energy Theory Seminar] Holographic duals of Higgsed Dpb(BCD)
548 2024-06-13 16:00  E6-2, #1323  Magnonic $\varphi$ Josephson junction and its non-Hermitian Josephson diode effect
» 2024-06-13 16:00  Zoom  [CAPP seminars]Simulation, design and fabrication of Josephson Parametric Amplifiers for axion search file