visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

JILA 1D Wannier-Stark optical lattice clock

2023.01.11 09:56

admin 조회 수:2408

날짜 2023-01-12 14:40 
연사  
장소 E6-2 #1323 

* Title : “JILA 1D Wannier-Stark optical lattice clock”

 

* Speaker : Kyungtae Kim(Joint Institute for Laboratory Astrophysics (JILA) & University of Colorado)

 

* Date : January 12th (Thursday), 14:40

 

* Place : E6 Room(#1323)

 

In this talk, we introduce JILA 1D optical lattice clock that utilizes Wannier-Stark (WS) states in a shallow vertical lattice. The experiment features T2 coherence over 30 seconds, resulting in frequency resolving power at the level of redshift below 1 mm throughout the sample [1]. The central parts of the system are the microscopic frequency map based on in-situ imaging and the engineering of the atomic interaction with shallow lattice [2]. With the partially delocalized WS state, we can balance on-site p-wave interaction and off-site s-wave interaction at "magic lattice depth." The low lattice intensity reduces many systematics, including the light shift, one of the largest contributions to the uncertainty, and Raman scattering. We present the recent evaluation of the lattice light shift at the 5E-19 fractional frequency uncertainty based on the precise control and understanding of the motional effects of the atoms [3]. Furthermore, we describe ongoing efforts to reduce the uncertainty from black-body radiation.

 

[1] T. Bothwell et al., Nature. 602, 420–424 (2022).

[2] A. Aeppli et al., Science Advances. 8, eadc9242 (2022).

[3] K. Kim, A. Aeppli, T. Bothwell, J. Ye, arXiv:2210.16374 (2022).

 

Contact: Jae-yoon Choi.  Tel. 2541

 
번호 날짜 연사 제목
공지 2025-04-29 10:00  Dr. Yeonju Go (Brookhaven National Laboratory)  Exploring the Hottest Matter in the Universe: Quark-Gluon Plasma through Hard Probes and Artificial Intelligence
공지 2025-05-01 16:00  Dr. Inwook Kim (Lawrence Livermore National Laboratory)  BSM Physics Search with Quantum Sensors
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
186 2022-11-11 11:00    [Update 세미나영상] (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid file
185 2022-11-17 16:00    (광학분야 세미나) Ultrastructural and Spectroscopic Studies by Super-Resolution Fluorescence Microscopy
184 2022-11-18 14:30    Kondo cloud condensation in a highly-doped semiconductor metal file
183 2022-11-18 16:00    Qubits, new experimental tools for physics file
182 2022-11-24 16:00    Probing fundamental physics by mapping the mm and sub-mm sky
181 2022-11-25 11:00    [Update 세미나영상](응집물리 세미나) DMFT+ NRG: From models to real materials, from local to nonlocal correlations file
180 2022-12-07 16:00    (광학분야 세미나) Non-Hermitian physics and non-Hermitian singularity
179 2022-12-09 11:00    [Update 세미나영상](응집물리 세미나) Single-shot measurements of strongly-correlated artificial molecular levels in semiconductor quantum dots file
178 2022-12-13 11:00    Art of thin film engineering toward topological quantum computation file
177 2022-12-20 16:00    Studying Baryonic Flow Across the Cosmic Scales Using Radio and Millimeter Wavelength Experiments
176 2022-12-20 16:00    Getting into Biology and Medicine as Physicist
175 2023-01-09 16:00    Non-Hermitian Hopf-bundle Matter. Moon Jip Park (IBS-PCS)
174 2023-01-10 16:00    Terahertz Spectroscopy of Quantum Materials, Jae Hoon Kim (Yonsei University)
173 2023-01-11 11:00    Directly proving magnetoelastic coupling in a soft ferromagnet using Lorentz 4D-STEM file
172 2023-01-11 16:00    Non-abelian anyons and graph gauge theory on a superconducting processor, Eun-Ah Kim (Cornell University/Ewha Womans University)
» 2023-01-12 14:40    JILA 1D Wannier-Stark optical lattice clock file
170 2023-01-12 16:00    Spin wavepackets in the Kagome ferromagnet Fe3Sn2: propagation and precursors
169 2023-02-20 16:00    Physics of ferromagnet/superconductor junctions
168 2023-02-20 17:00    (Optics Seminar) Neural Holography for Next generation Virtual and Augmented Reality Displays file
167 2023-02-27 12:00    2023 봄학기 콜로키움 전체 일정 file