visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

JILA 1D Wannier-Stark optical lattice clock

2023.01.11 09:56

admin 조회 수:277

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
308 2019-07-08 14:00  E6, #1322  Ultrabroadband squeezed pulses and their relation to relativity file
307 2019-07-10 16:00  Academic Cltural Complex (E9) 5층 스카이라운지  Public Lectures file
306 2019-07-16 16:00  Rm. 1323 (E6-2)  2019 Physics Distinguished Lecture file
305 2019-07-21 12:00  E6-2,# 5318  Challenges and Opportunities in Theoretical Particle Physics 2019 file
304 2019-07-25 16:00  E6-2, #1323  Band topology of twisted bilayer graphene file
303 2019-07-30 16:00  #1323, E6-2  Dirac fermions and flat bands in correlated kagome metals file
302 2019-07-31 16:00  E6-2, #1323  Features of ballistic superconducting graphene file
301 2019-08-01 14:00  E6 Room(#1323)  Low-density Superconductivity in SrTiO3 Probed by Planar Tunneling Spectroscopy file
300 2019-08-06 16:00  E6 Room(#1323)  Visualization of in-plane piezoresponse vector fields file
299 2019-08-14 16:00  Rm. 1323, E6  Quantum Optics, at the heart of quantum metrology and quantum information file
298 2019-08-16 14:00  E6 Room(#1323)  Multiferroic and Magnetoelectric Effects by Tailoring Interfacial Chemistry and Physics in Correlated Oxides file
297 2019-08-19 10:00  Rm. 1322, E6-2  Tutorials on Multimode Quantum Optics in the Continuous Variable Regime file
296 2019-08-22 16:00  #1323, E6-2  Physics and Applications in Nanoelectronics and Nonomechanics file
295 2019-08-27 16:00  Rm. 1323, E6  Critical current properties of Fe-based superconductors file
294 2019-09-02 16:00  Seminar Room 1501  Fall 2019: Physics Colloquium file
293 2019-09-10 15:00  E6-2. 1st fl. #1323  Two-Stage Kondo Effect file
292 2019-09-10 15:00  #2502, E6-2  (2+1) D Duality Web from 3D Euclidean Lattice file
291 2019-09-18 16:00  #1323, E6-2  Exploring Synthetic Quantum Matter in Superconducting Circuits file
290 2019-09-18 16:00  Seminar Room #1323  Fall 2019: Physics Seminar Serises file
289 2019-09-26 16:00  #1323, E6-2  Entanglement Swapping with Autonomous Polarization-Entangled Photon-Pairs from Warm Atomic Ensemble file