visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

JILA 1D Wannier-Stark optical lattice clock

2023.01.11 09:56

admin 조회 수:246

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
246 2019-12-13 13:30  #1323, E6-2  Biophysics Mini-symposium at KAIST file
245 2019-12-18 16:00  #1323, E6-2  Road to Higher Tc Superconductivity file
244 2019-12-27 15:00  #5318, E6-2  The superconducting order parameter puzzle of Sr2RuO4 file
243 2019-12-27 15:00  E6-2,#5318  The superconducting order parameter puzzle of Sr2RuO4 file
242 2020-01-17 16:00  #1323, E6-2  Symmetry Breaking and Topology in Superfluid 3He file
241 2020-02-12 13:00  E6-2, #5318  From inflation to new weak-scale file
240 2020-02-13 16:30  E6-6, #119  Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
239 2020-02-20 16:00  #1323, E6-2  Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2 file
238 2020-07-02 16:00  Zoom Video Conference Seminar  An irreversible qubit-photon coupling for the detection of itinerant microwave photons file
237 2020-08-17 20:00  Zoom webinar  Using magnetic tunnel junctions to compute like the brain file
236 2020-08-25 20:00  Zoom webinar  KAIST Global Forum for Spin and Beyond (Second Forum) file
235 2020-09-11 14:00  zoom  SRC Seminar file
234 2020-09-14 17:30  Zoom webinar  KAIST Global Forum for Spin and Beyond (Third Forum) file
233 2020-09-22 09:30  Zoom webinar  Physics and applications of soliton microcombs(Quantum- & Nano-Photonics) file
232 2020-09-24 09:00  Zoom Video  (CAPP/IBS)Searching for Dark Matter with a Superconducting Qubit , Cryogenic Microwave Circuit Development at the NSTU file
231 2020-09-28 17:30  Zoom webinar  KAIST Global Forum for Spin and Beyond(Fourth Forum) file
230 2020-10-09 09:00  https://kaist.zoom.us/j/85161896513?pwd=U3pwWFFZaWVRamxDZUR5REhNeVk0UT09  Quantum Many-Body Simulation file
229 2020-10-15 16:00  CAPP Seminar Room #C303, Creation Hall (3F), KAIST Munji Campus  Graphene-based Josephson junction microwave bolometer file
228 2020-10-15 16:00  (https://kaist.zoom.us/j/93997220310)  Towards resource-efficient and fault-tolerant quantum computation with nonclassical light
227 2020-10-15 17:00  https://bit.ly/3ndIiJn  Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file