|장소||Zoom and E6 #1323|
|일시||Jan 12th (Wed), 11:00 AM|
|연사||Joonseok Hur (MIT)|
Title: Spectroscopic study of trapped ions towards probing dark matter and new physics
Speaker: Joonseok Hur (MIT)
January 12th (Wednesday), 11:00, E6 #1323 &
Zoom link: https://kaist.zoom.us/j/86232436126
Historically, precise atomic spectroscopy has led to new physics in many instances. Precision low-energy experiments may thus supplement high-energy and astrophysical approaches. It has been proposed to measure the isotope shifts (ISs) in ions to probe new physics using King plots , a two-dimensional graph that maps the measured ISs . The Standard Model (SM) predicts in the leading order that the points in King plots should lie on a straight line. Departure from such linearity is unambiguously observed in our recent experiments with narrow optical transitions in trapped ions . However, the contribution of higher-order corrections to the non-linearity within the SM complicates the test. The sources of the observed violation should be examined carefully to decouple the SM corrections arising from nuclear physics from possible new-physics contributions.
Here I will present our latest experimental and theoretical efforts to observe the non-linearity, identify its physical origin, and obtain the bound on dark boson-mediated interaction as a particular type of new physics that is of increasing interest. Future works will be discussed subsequently.
 J. C. Berengut et al., Physical Review Letters 120, 091801 (2018); V. V. Flambaum, A. J. Geddes, and A. V. Viatkina, Physical Review A 97, 032510 (2018); C. Delaunay et al., Physical Review D 96, 093001 (2017).
 W. H. King, Isotope Shifts in Atomic Spectra (Plenum Press, New York, 1984).
 I. Counts*, J. Hur* et al., Physical Review Letters 125, 123002 (2020) for the early stage of the work.
Contact: Myeongsoo Kang (email@example.com)
|67||March 18(Fri.) 11:00||Online seminar||Dr. Dirk Wulferding (IBS-Center for Correlated Electron Systems, Seoul National University, Seoul)||(응집물리 세미나) Illuminating exotic states of matter: Raman spectroscopy as an experimental tool to characterize quantum spin liquids|
|66||April 15(Fri.) 11:00||Online seminar||Prof.Jaekwang Lee (Department of Physics, Pusan National University)||(응집물리 세미나) First-principles studies of polar oxides and their applications|
|65||May. 14 (Fri.), 02:30 PM||Online seminar||Dr. Suyong Jung(KRISS)||Electrically tunable spin valve effect in vertical van-der-Waals magnetic tunnel junctions|
|64||Jan.28(Thu), 06:00PM||Online Seminar||Alexandre Zagoskin(Loughborough Univ.)||Quantum metamaterials: concept, theory, prototypes and possible applications|
|63||7월 29일(목) 오후 2시 ~ 오후 4시||Online seminar||Dr. Kunio Kaneta(KIAS)||Gravitationally Induced Dark Sector and Inflationary Dynamics|
|62||Jun. 11 (Fri.), 02:30 PM||Online seminar||Dr. Jin Woong Cha(KRISS)||Engineering sound waves and vibrations in multi-mode nanomechanical systems|
|61||Jun. 11 (Fri.), 04:00 PM||Online seminar||Dr. Keun Su Kim(Yonsei University)||Pseudogap in surface-doped black phosphorus|
|60||May. 14 (Fri.), 04:00 PM||Online seminar||Dr. Je-Hyung Kim(UNIST)||Spatial and temporal separation of environmental dephasing sources from solid-state quantum emitters|
|59||Mar25(Thur), 04:00PM||Online Seminar (Zoom)||Prof. Atsushi Tokiyasu (Tohoku Univ.)||Search for dark matter axion with Rydberg atoms|
|58||Nov 17th 12:00 PM||Online(Zoom)||Prof. Qiang Lin (Univ. of Rochester, USA)||Quantum- & Nano-Photonics" 세미나 시리즈|
|57||Apr. 2 (Fri.), 02:30 PM||Online(Zoom)||Dr. Tae Hyun Kim (SNU)||Quantum computing and entanglement generation using trapped ions and photons|
|56||Apr. 2 (Fri.), 04:00 PM||Online(Zoom)||Dr. Heejun Yang (KAIST)||Van der Waals heterostructures for orbital gating-based phototransistors and electronic spectroscopy|
|55||Nov.26(Thu), 04:00PM||Online(Zoom)||Myung-Ki Kim||2020 가을학기 광학분야 특별세미나(Light Engineering Beyond the Diffraction Limit)|
|54||3 PM, 12 Jun (Wed), 2019||Rm# 1323, E6-2||Dr. Minyoung You||The relation between free and interacting fermionic SPT phases|
|53||8/19 (Mon), 10:00~11:30, 8/22 (Thur), 10:00~11:30||Rm. 1322, E6-2||Nicolas Treps||Tutorials on Multimode Quantum Optics in the Continuous Variable Regime|
|52||2019. 7. 16(화)||Rm. 1323 (E6-2)||Prof. Sidney Nagel||2019 Physics Distinguished Lecture|
|51||August. 14th (Wed.), 4:00PM,||Rm. 1323, E6||Prof. Nicolas Treps||Quantum Optics, at the heart of quantum metrology and quantum information|
|50||August 27 (Tue.), 4:00PM||Rm. 1323, E6||Hiroshi Eisaki||Critical current properties of Fe-based superconductors|
|49||-||RM. 1323, E6-2||Spring 2019: Physics Seminar Serises|
|48||Feb. 25 - Jun 3||Rm. 1501 (E6)||Spring 2019: Physics Colloquium|