visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

JILA 1D Wannier-Stark optical lattice clock

2023.01.11 09:56

admin 조회 수:3423

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 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
364 2025-04-29 16:00  Dr. Tokuro Shimokawa (Okinawa Institute of Science and Technology)  Can experimentally-accessible measures of entanglement distinguish quantum spin liquid and random singlet phases? file
363 2018-10-16 10:00    Capturing protein cluster dynamics and gene expression output in live cells file
362 2023-02-28 11:00    Topotactic redox engineering toward novel material file
361 2022-11-10 16:00    Probing the Origin of Cosmic Infrared Background and Future Prospects with SPHEREx
360 2015-11-10 16:00    Rapid heating of matter using high power lasers
359 2015-12-01 16:00    Introducing extra dimensions to spectroscopic studies of advanced quantum materials
358 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 file
357 2023-04-13 11:00    [High Energy Theory Seminar]Noninvertible Gauss Law and Axions
356 2023-12-14 16:00    Superconducting qubits for large-scale quantum computers file
355 2016-09-02 14:30    Nanoscale Thermal Physics: Seebeck Effect and Nanoscale Friction
354 2016-09-02 16:00    Quantum Electrical Transport in Topological Insulator Nanowires
353 2018-10-15 16:00    Universal properties of macroscopic current-carrying systems file
352 2018-04-11 13:30    Probing 3D Structure and Physical Properties of Materials at the Single-Atom Level file
351 2022-06-10 11:00    Record-quality two-dimensional electron systems file
350 2022-05-13 16:00    High-fidelity iToffoli gate for fixed-frequency superconducting qubits file
349 2017-05-12 13:30    Topological Dirac insulator
348 2018-04-11 16:00    Non-Gaussian states of multimode light generated via hybrid quantum information processing file
347 2016-05-13 13:30    Aperiodic crystals in low dimensions
346 2022-08-09 14:00    Quantum biology in fluorescent protein: a new model system to study quantum effects in biology file
345 2018-03-16 16:00    Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file