Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Heo myoung"'
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 shi
Externí odkaz:
http://arxiv.org/abs/2207.07322
Absolute frequency measurement of the 171Yb optical lattice clock at KRISS using TAI for over a year
We report a measurement of the absolute frequency of the 1S0-3P0 transition in the 171Yb optical lattice clock at KRISS (KRISS-Yb1) for 14 months, which was referenced to the SI second by primary and secondary standards worldwide via TAI (Internation
Externí odkaz:
http://arxiv.org/abs/2108.00108
Publikováno v:
Applied Optics Vol. 59, Issue 28, pp. 8918-8924 (2020)
An experimental method is developed for the robust frequency stabilization using a high-finesse cavity when the laser exhibits large intermittent frequency jumps. This is accomplished by applying an additional slow feedback signal from Doppler-free f
Externí odkaz:
http://arxiv.org/abs/2010.01776
Publikováno v:
Current Optics and Photonics, Vol. 3, No. 2, April 2019, pp. 128-134
The vibration sensitivities of optical cavities depending on the support-area were investigated both numerically and experimentally. We performed the numerical simulation with two models; one with total constraint over the support area, and the other
Externí odkaz:
http://arxiv.org/abs/1811.02686
The physics of critical phenomena in a many-body system far from thermal equilibrium is an interesting and important issue to be addressed both experimentally and theoretically. The trapped cold atoms have been actively used as a clean and versatile
Externí odkaz:
http://arxiv.org/abs/1707.02787
Autor:
Kim, Huidong, Heo, Myoung-Sun, Lee, Won-Kyu, Park, Chang Yong, Hong, Hyun-Gue, Hwang, Sang-Wook, Yu, Dai-Hyuk
We measured the absolute frequency of the $^1S_0$ - $^3P_0$ transition of $^{171}$Yb atoms confined in a one-dimensional optical lattice relative to the SI second. The determined frequency was 518 295 836 590 863.38(57) Hz. The uncertainty was reduce
Externí odkaz:
http://arxiv.org/abs/1701.04534
Autor:
Heo, Myoung-Sun, Park, Sang Eon, Lee, Won-Kyu, Lee, Sang-Bum, Hong, Hyun-Gue, Kwon, Taeg Yong, Park, Chang Yong, Yu, Dai-Hyuk, Santarelli, G., Hilton, Ashby, Luiten, Andre N., Hartnett, John G.
In this paper we report on the implementation and stability analysis of a drift-compensated frequency synthesizer from a cryogenic sapphire oscillator (CSO) designed for a Cs/Rb atomic fountain clock. The synthesizer has two microwave outputs of 7 GH
Externí odkaz:
http://arxiv.org/abs/1610.02027
Collisions of $^6$Li$_2$ molecules with free $^6$Li atoms reveal a striking deviation from universal predictions based on long-range van der Waals interactions. Li$_2$ closed-channel molecules are formed in the highest vibrational state near a narrow
Externí odkaz:
http://arxiv.org/abs/1301.3566
Autor:
Lee, Ye-Ryoung, Wang, Tout T., Rvachov, Timur M., Choi, Jae-Hoon, Ketterle, Wolfgang, Heo, Myoung-Sun
We show how to use trapped ultracold atoms to measure the magnetic susceptibility of a two-component Fermi gas. The method is illustrated for a non-interacting gas of $^6$Li, using the tunability of interactions around a wide Feshbach resonances. The
Externí odkaz:
http://arxiv.org/abs/1301.1139
Autor:
Heo, Myoung-Sun, Wang, Tout T., Christensen, Caleb A., Rvachov, Timur M., Cotta, Dylan A., Choi, Jae-Hoon, Lee, Ye-Ryoung, Ketterle, Wolfgang
We describe the formation of fermionic NaLi Feshbach molecules from an ultracold mixture of bosonic 23Na and fermionic 6Li. Precise magnetic field sweeps across a narrow Feshbach resonance at 745 G result in a molecule conversion fraction of 5% for o
Externí odkaz:
http://arxiv.org/abs/1205.5304