Prospects for frequency comparison of Sr and Hg optical lattice clocks toward 10−18 uncertainties

2012 ◽  
Author(s):  
H. Katori ◽  
M. Takamoto ◽  
T. Takano ◽  
I. Ushijima ◽  
T. Ohkubo ◽  
...  
Keyword(s):  
Optical Lattice ◽  
Frequency Comparison

Frequency comparison of optical lattice clocks

2011 ◽  
Author(s):  
Masao Takamoto ◽  
Tetsushi Takano ◽  
Hidetoshi Katori
Keyword(s):  
Optical Lattice ◽  
Frequency Comparison

30-km-long optical fiber link at 1397 nm for frequency comparison between distant strontium optical lattice clocks

2014 ◽  
Vol 53 (3) ◽  
pp. 032801 ◽  
Author(s):  
Tomoya Akatsuka ◽  
Hitomi Ono ◽  
Keitaro Hayashida ◽  
Kuniya Araki ◽  
Masao Takamoto ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Lattice ◽  
Frequency Comparison ◽  
Fiber Link

Frequency comparison of optical lattice clocks beyond the Dick limit

2011 ◽  
Vol 5 (5) ◽  
pp. 288-292 ◽  
Author(s):  
Masao Takamoto ◽  
Tetsushi Takano ◽  
Hidetoshi Katori
Keyword(s):  
Optical Lattice ◽  
Frequency Comparison

Frequency comparison between optical lattice clocks

2007 ◽  
Author(s):  
Hidetoshi Katori ◽  
Masao Takamoto ◽  
Tomoya Akatsuka ◽  
Ryoichi Higashi
Keyword(s):  
Optical Lattice ◽  
Frequency Comparison

Frequency Comparison between Optical Lattice Clocks

2007 ◽  
Author(s):  
Hidetoshi Katori ◽  
Masao Takamoto ◽  
Tomoya Akatsuka ◽  
Ryoichi Higashi
Keyword(s):  
Optical Lattice ◽  
Frequency Comparison

scholarly journals Synchronous frequency comparison beyond the Dick limit based on dual-excitation spectrum in an optical lattice clock

2020 ◽  
Vol 117 (23) ◽  
pp. 231101
Author(s):  
Xiaotong Lu ◽  
Chihua Zhou ◽  
Ting Li ◽  
Yebing Wang ◽  
Hong Chang
Keyword(s):  
Excitation Spectrum ◽  
Optical Lattice ◽  
Optical Lattice Clock ◽  
Frequency Comparison

scholarly journals Optical lattice clocks and frequency comparison

2011 ◽  
Vol 264 ◽  
pp. 012011 ◽  
Author(s):  
Hidetoshi Katori ◽  
Tetsushi Takano ◽  
Masao Takamoto
Keyword(s):  
Optical Lattice ◽  
Frequency Comparison

scholarly journals Exploring potential applications of optical lattice clocks in a plate subduction zone

2021 ◽  
Vol 95 (8) ◽  
Author(s):  
Yoshiyuki Tanaka ◽  
Hidetoshi Katori
Keyword(s):  
Optical Lattice ◽  
State Of The Art ◽  
Temporal Response ◽  
Height Variation ◽  
Height Difference ◽  
Observation Network ◽  
Potential Applications ◽  
Frequency Comparison ◽  
Averaging Time ◽  
Plate Subduction

AbstractOptical clocks improved the accuracy of state-of-the-art cesium clocks by more than two orders of magnitude and enabled frequency comparison with a fractional uncertainty of one part in 1018. Gravitational redshift of two such clocks allows determining their height difference with an uncertainty of 1 cm. In Europe, chronometric leveling has been extensively conducted for unifying the height reference systems. Temporal response of the leveling, which affords monitoring a cm height variation within hours of averaging time, may offer new opportunities to explore seismology and volcanology. Superb stability of optical lattice clocks will be best used for such applications. This article outlines the prospects of chronometric leveling in Japan. Combining optical lattice clocks with an existing observation network of GNSS, crustal deformations may be monitored with unprecedented accuracy in the future.

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