visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

JILA 1D Wannier-Stark optical lattice clock

2023.01.11 09:56

admin 조회 수:389

날짜 2023-01-12 14:40 
일시 Jan. 12 (Thu) 14:40 pm 
장소 E6-2 #1323 
연사 Kyungtae Kim 

* 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 장소 제목
346 2019-12-13 13:30  #1323, E6-2  Biophysics Mini-symposium at KAIST file
345 2019-12-18 16:00  #1323, E6-2  Road to Higher Tc Superconductivity file
344 2020-12-02 10:00  Zoom  Recent progress in Axion Dark Matter eXperiment (ADMX) technology file
343 2019-12-27 15:00  E6-2,#5318  The superconducting order parameter puzzle of Sr2RuO4 file
342 2019-12-03 16:00  #1323, E6-2  Toward Quantum Materials with Correlated Oxides file
341 2019-12-05 16:00  #1323, E6-2  Subwavelenth Photonic Devices: From Single Photon Sources to Solar Cell file
340 2017-02-01 14:00  #1323(E6-2. 1st fl.)  Quantum electron optics using flying electrons
339 2018-02-12 15:00  #C303, (Creation Hall 3F, KAIST Munji Campus)  The recent result of XMASS Experiment
338 2021-02-02 14:30  Zoom  Quantum- & Nano-Photonics 세미나(Integrated Nanophotonics with Metamaterials, Microcomb, and Atomic Systems) file
337 2019-02-25 16:00  Rm. 1501 (E6)  Spring 2019: Physics Colloquium file
336 2023-02-28 11:00  E6 Room(#1322)  Topotactic redox engineering toward novel material file
335 2021-02-15 17:00  Zoom  Magnetic Cluster Octupole Domain evolutation in chiral antiferromagnets file
334 2024-02-16 10:00  E6, #1323  Optical conductivity of superconducting states driven by Van Hove singularities
333 2021-02-17 09:00  Online  석학 대중 강연 및 강의 시리즈 file
332 2020-02-12 13:00  E6-2, #5318  From inflation to new weak-scale file
331 2020-02-13 16:30  E6-6, #119  Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
330 2020-02-20 16:00  #1323, E6-2  Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2 file
329 2019-02-21 16:00  #5313, E6-2  B-meson charged current anomalies - Theoretical status file
328 2022-01-12 11:00  Zoom and E6 #1323  Spectroscopic study of trapped ions towards probing dark matter and new physics file
327 2024-01-16 16:00  E6-2, #2502  [High Energy Theory Seminar] Towards quantum black hole microstates