Optical two-way time and frequency transfer over free space

Simultaneous remote transfer of accurate timing and optical frequency over a public fiber network

(2012) Olivier Lopez et al.   APPLIED PHYSICS B-LASERS AND OPTICS

Geophysical applicability of atomic clocks: direct continental geoid mapping

(2012) Ruxandra Bondarescu et al.   GEOPHYSICAL JOURNAL INTERNATIONAL

Continuous real-time correction and averaging for frequency comb interferometry

(2012) Julien Roy et al.   OPTICS EXPRESS

A 920-Kilometer Optical Fiber Link for Frequency Metrology at the 19th Decimal Place

(2012) K. Predehl et al.   SCIENCE

Direct Comparison of Distant Optical Lattice Clocks at the $10^{-16}$ Uncertainty

(2011) Atsushi Yamaguchi et al.   Applied Physics Express

Making optical atomic clocks more stable with 10−16-level laser stabilization

(2011) Y. Y. Jiang et al.   Nature Photonics

Optical lattice clocks and quantum metrology

(2011) Hidetoshi Katori   Nature Photonics

Generation of ultrastable microwaves via optical frequency division

(2011) T. M. Fortier et al.   Nature Photonics

High-resolution microwave frequency transfer over an 86-km-long optical fiber network using a mode-locked laser

(2011) Giuseppe Marra et al.   OPTICS LETTERS

When should we change the definition of the second?

(2011) P. Gill   PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES

Time-of-flight measurement with femtosecond light pulses

(2010) Joohyung Lee et al.   Nature Photonics

Coherent optical link through the turbulent atmosphere

(2010) Khelifa Djerroud et al.   OPTICS LETTERS

Frequency Comparison of Two High-AccuracyAl+Optical Clocks

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

Optical Clocks and Relativity

(2010) C. W. Chou et al.   SCIENCE

Space clocks and fundamental tests: The ACES experiment

(2009) L. Cacciapuoti et al.   European Physical Journal-Special Topics

Rapid and precise absolute distance measurements at long range

(2009) I. Coddington et al.   Nature Photonics

Atmospheric transfer of optical and radio frequency clock signals

(2009) B. Sprenger et al.   OPTICS LETTERS

Einstein Gravity Explorer–a medium-class fundamental physics mission

(2008) S. Schiller et al.   EXPERIMENTAL ASTRONOMY

Quantum physics exploring gravity in the outer solar system: the SAGAS project

(2008) P. Wolf et al.   EXPERIMENTAL ASTRONOMY

Drift-free femtosecond timing synchronization of remote optical and microwave sources

(2008) Jungwon Kim et al.   Nature Photonics

Sr Lattice Clock at 1 x 10-16 Fractional Uncertainty by Remote Optical Evaluation with a Ca Clock

(2008) A. D. Ludlow et al.   SCIENCE