Geodesy and metrology with a transportable optical clock

Improved absolute frequency measurement of the171Yb optical lattice clock at KRISS relative to the SI second

(2017) Huidong Kim et al.   JAPANESE JOURNAL OF APPLIED PHYSICS

Geodetic methods to determine the relativistic redshift at the level of 10 $$^{-18}$$ - 18 in the context of international timescales: a review and practical results

(2017) Heiner Denker et al.   JOURNAL OF GEODESY

Absolute frequency measurement of the $}^{1\text{S_{0}}$ – $}^{3\text{P_{0}}$ transition of171Yb

(2017) Marco Pizzocaro et al.   METROLOGIA

SI-traceable measurement of an optical frequency at the low 10^−16 level without a local primary standard

(2017) Hidekazu Hachisu et al.   OPTICS EXPRESS

Transportable Optical Lattice Clock with 7×10−17 Uncertainty

(2017) S. B. Koller et al.   PHYSICAL REVIEW LETTERS

Absolute frequency measurement with uncertainty below $$1\times 10^{-15}$$ 1 × 10 - 15 using International Atomic Time

(2016) Hidekazu Hachisu et al.   APPLIED PHYSICS B-LASERS AND OPTICS

Optical to microwave clock frequency ratios with a nearly continuous strontium optical lattice clock

(2016) Jérôme Lodewyck et al.   METROLOGIA

Time-variable gravity potential components for optical clock comparisons and the definition of international time scales

(2016) C Voigt et al.   METROLOGIA

Frequency ratio of Yb and Sr clocks with 5 × 10−17 uncertainty at 150 seconds averaging time

(2016) Nils Nemitz et al.   Nature Photonics

Ultrastable optical clock with two cold-atom ensembles

(2016) M. Schioppo et al.   Nature Photonics

Geopotential measurements with synchronously linked optical lattice clocks

(2016) Tetsushi Takano et al.   Nature Photonics

Single-Ion Atomic Clock with3×10−18Systematic Uncertainty

(2016) N. Huntemann et al.   PHYSICAL REVIEW LETTERS

A clock network for geodesy and fundamental science

(2016) C. Lisdat et al.   Nature Communications

Realization of a timescale with an accurate optical lattice clock

(2016) Christian Grebing et al.   Optica

First Evaluation and Frequency Measurement of the Strontium Optical Lattice Clock at NIM

(2015) Yi-Ge Lin et al.   CHINESE PHYSICS LETTERS

Frequency ratios of Sr, Yb, and Hg based optical lattice clocks and their applications

(2015) Masao Takamoto et al.   COMPTES RENDUS PHYSIQUE

Development of a strontium optical lattice clock for the SOC mission on the ISS

(2015) Kai Bongs et al.   COMPTES RENDUS PHYSIQUE

Towards a redefinition of the second based on optical atomic clocks

(2015) Fritz Riehle   COMPTES RENDUS PHYSIQUE

Improved Frequency Measurement of the 1S0–3P0 Clock Transition in 87Sr Using a Cs Fountain Clock as a Transfer Oscillator

(2015) Takehiko Tanabe et al.   JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN

Least-squares analysis of clock frequency comparison data to deduce optimized frequency and frequency ratio values

(2015) H S Margolis et al.   METROLOGIA

Cryogenic optical lattice clocks

(2015) Ichiro Ushijima et al.   Nature Photonics

Noise and instability of an optical lattice clock

(2015) Ali Al-Masoudi et al.   PHYSICAL REVIEW A

High-accuracy coherent optical frequency transfer over a doubled 642-km fiber link

(2014) D. Calonico et al.   APPLIED PHYSICS B-LASERS AND OPTICS

Accuracy evaluation of ITCsF2: a nitrogen cooled caesium fountain

(2014) Filippo Levi et al.   METROLOGIA

Timekeepers of the future

(2014) Helen Margolis   Nature Physics

A strontium lattice clock with 3 × 10−17inaccuracy and its frequency

(2014) Stephan Falke et al.   NEW JOURNAL OF PHYSICS

Frequency ratio measurement of ^171Yb and ^87Sr optical lattice clocks

(2014) Daisuke Akamatsu et al.   OPTICS EXPRESS

Direct comparison of optical lattice clocks with an intercontinental baseline of 9000  km

(2014) H. Hachisu et al.   OPTICS LETTERS

Eavesdropping time and frequency: phase noise cancellation along a time-varying path, such as an optical fiber

(2014) Gesine Grosche   OPTICS LETTERS

Agreement between two88Sr+optical clocks to 4 parts in 1017

(2014) G. P. Barwood et al.   PHYSICAL REVIEW A

Frequency Ratio of Two Optical Clock Transitions inYb+171and Constraints on the Time Variation of Fundamental Constants

(2014) R. M. Godun et al.   PHYSICAL REVIEW LETTERS

Improved Limit on a Temporal Variation ofmp/mefrom Comparisons ofYb+and Cs Atomic Clocks

(2014) N. Huntemann et al.   PHYSICAL REVIEW LETTERS

Spectroscopy and frequency measurement of the87Sr clock transition by laser linewidth transfer using an optical frequency comb

(2013) Daisuke Akamatsu et al.   Applied Physics Express

Absolute frequency measurement of1S0(F= 1/2)–3P0(F= 1/2) transition of171Yb atoms in a one-dimensional optical lattice at KRISS

(2013) Chang Yong Park et al.   METROLOGIA

Cavity-stabilized laser with acceleration sensitivity below10−12g−1

(2013) David R. Leibrandt et al.   PHYSICAL REVIEW A

Blackbody-radiation shift in the Sr optical atomic clock

(2013) M. S. Safronova et al.   PHYSICAL REVIEW A

Stability Transfer between Two Clock Lasers Operating at Different Wavelengths for Absolute Frequency Measurement of Clock Transition in $^{87}$Sr

(2012) Atsushi Yamaguchi et al.   Applied Physics Express

Improved Absolute Frequency Measurement of the $^{171}$Yb Optical Lattice Clock towards a Candidate for the Redefinition of the Second

(2012) Masami Yasuda et al.   Applied Physics Express

Direct comparison of a Ca^+ single-ion clock against a Sr lattice clock to verify the absolute frequency measurement

(2012) Kensuke Matsubara et al.   OPTICS EXPRESS

High-Accuracy Measurement of Atomic Polarizability in an Optical Lattice Clock

(2012) J. A. Sherman et al.   PHYSICAL REVIEW LETTERS

High Accuracy Correction of Blackbody Radiation Shift in an Optical Lattice Clock

(2012) Thomas Middelmann et al.   PHYSICAL REVIEW LETTERS

The87Sr optical frequency standard at PTB

(2011) St Falke et al.   METROLOGIA

Lattice-Induced Frequency Shifts in Sr Optical Lattice Clocks at the10−17Level

(2011) P. G. Westergaard et al.   PHYSICAL REVIEW LETTERS

Frequency Comparison of Two High-AccuracyAl+Optical Clocks

(2010) C. Chou et al.   PHYSICAL REVIEW LETTERS

One-Dimensional Optical Lattice Clock with a Fermionic171Yb Isotope

(2009) Takuya Kohno et al.   Applied Physics Express

Measuring the frequency of a Sr optical lattice clock using a 120 km coherent optical transfer

(2009) F.-L. Hong et al.   OPTICS LETTERS

Spin-1/2Optical Lattice Clock

(2009) N. Lemke et al.   PHYSICAL REVIEW LETTERS

The absolute frequency of the87Sr optical clock transition

(2008) Gretchen K Campbell et al.   METROLOGIA