Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Dai Hyuk Yu"'
Autor:
Alexander Tzalenchuk, Nicolas Spethmann, Tim Prior, Jay H. Hendricks, Yijie Pan, Vladimir Bubanja, Guilherme P. Temporão, Dai-Hyuk Yu, Damir Ilić, Barbara L. Goldstein
Publikováno v:
Nature Physics. 18:724-727
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39c4d30a90576b21340466a5dfd4c2aa
https://doi.org/10.1038/s41567-022-01659-z
https://doi.org/10.1038/s41567-022-01659-z
Autor:
Meungho Seo, In Hwan Do, Hansuek Lee, Dai-Hyuk Yu, Sangwon Seo, Hyun-Gue Hong, Jeong Ho Han, Sang Eon Park, Sang-Bum Lee, Taeg Yong Kwon, Jongchul Mun, Jae Hoon Lee
Publikováno v:
Optics express. 30(14)
Transporting cold atoms between interconnected vacuum chambers is an important technique for increasing the versatility of cold atom setups, particularly for those that couple atoms to photonic devices. In this report, we introduce a method where we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9edecfcd99133365b77f879ec02d0eba
https://pubmed.ncbi.nlm.nih.gov/36237095
https://pubmed.ncbi.nlm.nih.gov/36237095
Publikováno v:
Physics and High Technology. 30:2-7
Frequencies have been the most accurately measured physical quantity since the second was defined in 1967 based on the microwave atomic transition of a Cs atom. Recently, atomic clocks using optical frequency transitions have shown an order of magnit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d81f82592f0fd16fed58270caeeb5abe
https://doi.org/10.3938/phit.30.005
https://doi.org/10.3938/phit.30.005
As optical clocks are improved to reach the frequency uncertainty below the 10−17 level, the frequency shift due to the blackbody radiation (BBR) has been one of the major systematic effects hindering further improvement. To evaluate the BBR shift
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3acb08fbcdcc5e550385e4c84f35dd4a
Publikováno v:
Review of Scientific Instruments. 94:013201
We developed a shutter driven by a solenoid to switch on/off the atomic beam of optical lattice clocks developed at KRISS [C. Y. Park et al., Metrologia 50, 119 (2013), S. Lee et al., New J. Phys. 18, 033030 (2016), H. Kim et al., Jpn. J. Appl. Phys.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73ffff4979b62f58d4ef6545732106af
https://doi.org/10.1063/5.0123971
https://doi.org/10.1063/5.0123971
Publikováno v:
New Journal of Physics, Vol 18, Iss 3, p 033030 (2016)
We analyze both the s- and p -wave collision induced frequency shifts and propose an over- π pulse scheme to cancel the shifts in optical lattice clocks interrogated by a Rabi pulse. The collisional frequency shifts are analytically solved as a func
Externí odkaz:
https://doaj.org/article/7ee6af9715584af7accbdd92ae03fcd2
Autor:
Tetsuya Ido, Miho Fujieda, Young Kyu Lee, Ryo Tabuchi, Chang Yong Park, Gérard Petit, Won-Kyu Lee, Hojoong Kim, Dai-Hyuk Yu, Sang-Wook Hwang, H. Hachisu, Myoung-Sun Heo, Sung-Hoon Yang, Tadahiro Gotoh
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 65:973-978
Advanced satellite-based frequency transfers by two-way carrier-phase (TWCP) and integer precise point positioning have been performed between the National Institute of Information and Communications Technology and Korea Research Institute of Standar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9de9d517009b27b2c449fe9572ea8e82
https://doi.org/10.1109/tuffc.2018.2821159
https://doi.org/10.1109/tuffc.2018.2821159
Publikováno v:
2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC).
Accuracy of the Yb optical lattice clock being developed at KRISS has been improved due to better measurements of light shifts and collisional shift. Its accuracy uncertainty is now 5.6×10$^{\mathbf {-17}}$, three times better than our previous resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::331490782605e15a29e5b35ff7f85aec
https://doi.org/10.1109/fcs.2019.8856008
https://doi.org/10.1109/fcs.2019.8856008
Autor:
Chang Yong Park, Huidong Kim, Gar-Wing Truong, Dai-Hyuk Yu, Garrett D. Cole, Myoung-Sun Heo, Won-Kyu Lee
Publikováno v:
2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC).
A new clock laser system using an optical cavity with $4.8 \times 10^-17$ thermal noise limit has been developed for rapid evaluation of ytterbium lattice clocks. This was realized by using a 30-cm-long ULE cavity, fused-silica mirror substrates, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::827949d89cdf3c0e369677d7d75bf95a
https://doi.org/10.1109/fcs.2019.8856128
https://doi.org/10.1109/fcs.2019.8856128
Publikováno v:
Free-Space Laser Communications XXXI.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e54750085b34d8da1f77d8189dabca1
https://doi.org/10.1117/12.2508699
https://doi.org/10.1117/12.2508699