Optical clock networks

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

(2016) Nils Nemitz et al.   Nature Photonics

Geopotential measurements with synchronously linked optical lattice clocks

(2016) Tetsushi Takano et al.   Nature Photonics

Strongly enhanced effects of Lorentz symmetry violation in entangled Yb+ ions

(2016) V. A. Dzuba et al.   Nature Physics

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

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

Observation of Gravitational Waves from a Binary Black Hole Merger

(2016) B. P. Abbott 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

Quantum tests of the Einstein Equivalence Principle with the STE–QUEST space mission

(2015) Brett Altschul et al.   ADVANCES IN SPACE RESEARCH

Frequency and time transfer for metrology and beyond using telecommunication network fibres

(2015) Olivier Lopez et al.   COMPTES RENDUS PHYSIQUE

Time and frequency comparisons using radiofrequency signals from satellites

(2015) Andreas Bauch   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

The ACES/PHARAO space mission

(2015) Philippe Laurent et al.   COMPTES RENDUS PHYSIQUE

A coherent fiber link for very long baseline interferometry

(2015) Cecilia Clivati et al.   IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL

Time transfer by laser link: a complete analysis of the uncertainty budget

(2015) E Samain et al.   METROLOGIA

1 × 10−16frequency transfer by GPS PPP with integer ambiguity resolution

(2015) Gérard Petit et al.   METROLOGIA

Cryogenic optical lattice clocks

(2015) Ichiro Ushijima et al.   Nature Photonics

Characterization of a 450 km baseline GPS carrier-phase link using an optical fiber link

(2015) Stefan Droste et al.   NEW JOURNAL OF PHYSICS

Cascaded optical fiber link using the internet network for remote clocks comparison

(2015) Nicola Chiodo et al.   OPTICS EXPRESS

Noise and instability of an optical lattice clock

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

Brillouin amplification supports1×10−20uncertainty in optical frequency transfer over 1400 km of underground fiber

(2015) Sebastian M. F. Raupach et al.   PHYSICAL REVIEW A

Frequency Ratio ofHg199andSr87Optical Lattice Clocks beyond the SI Limit

(2015) Kazuhiro Yamanaka et al.   PHYSICAL REVIEW LETTERS

Optical atomic clocks

(2015) Andrew D. Ludlow et al.   REVIEWS OF MODERN PHYSICS

Systematic evaluation of an atomic clock at 2 × 10−18 total uncertainty

(2015) T.L. Nicholson et al.   Nature Communications

A transportable strontium optical lattice clock

(2014) N. Poli et al.   APPLIED PHYSICS B-LASERS AND OPTICS

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

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

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

(2014) Tomoya Akatsuka et al.   JAPANESE JOURNAL OF APPLIED PHYSICS

Carrier-phase two-way satellite frequency transfer over a very long baseline

(2014) M Fujieda et al.   METROLOGIA

A quantum network of clocks

(2014) P. Kómár et al.   Nature Physics

Hunting for topological dark matter with atomic clocks

(2014) A. Derevianko et al.   Nature Physics

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

Two-way optical frequency comparisons at5×10−21relative stability over 100-km telecommunication network fibers

(2014) Anthony Bercy 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

The Global Network of Optical Magnetometers for Exotic physics (GNOME): A novel scheme to search for physics beyond the Standard Model

(2013) Szymon Pustelny et al.   ANNALEN DER PHYSIK

Binary and Millisecond Pulsars

(2013) Duncan R. Lorimer   Living Reviews in Relativity

Varying Constants, Gravitation and Cosmology

(2013) Jean-Philippe Uzan   Living Reviews in Relativity

Dissemination of time and RF frequency via a stabilized fibre optic link over a distance of 420 km

(2013) Łukasz Śliwczyński et al.   METROLOGIA

Mid-infrared laser phase-locking to a remote near-infrared frequency reference for high-precision molecular spectroscopy

(2013) B Chanteau et al.   NEW JOURNAL OF PHYSICS

Large-area fiber-optic gyroscope on a multiplexed fiber network

(2013) C. Clivati et al.   OPTICS LETTERS

Feasibility of giant fiber-optic gyroscopes

(2013) Stephan Schiller   PHYSICAL REVIEW A

Precision Measurement of the Hydrogen1S−2SFrequency via a 920-km Fiber Link

(2013) Arthur Matveev et al.   PHYSICAL REVIEW LETTERS

An Atomic Clock with 10-18 Instability

(2013) N. Hinkley et al.   SCIENCE

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

Intersatellite laser ranging instrument for the GRACE follow-on mission

(2012) B. S. Sheard et al.   JOURNAL OF GEODESY

Time transfer through optical fibres over a distance of 73 km with an uncertainty below 100 ps

(2012) M Rost et al.   METROLOGIA

Lower satellite-gravimetry estimates of Antarctic sea-level contribution

(2012) Matt A. King et al.   NATURE

Ultra-stable long distance optical frequency distribution using the Internet fiber network

(2012) Olivier Lopez 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

GNSS times and UTC

(2011) W Lewandowski et al.   METROLOGIA

Remote frequency measurement of the1S0→3P1transition in laser-cooled24Mg

(2011) J Friebe et al.   NEW JOURNAL OF PHYSICS

When should we change the definition of the second?

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

Adapting a Cryogenic Sapphire Oscillator for Very Long Baseline Interferometry

(2011) Sheperd Doeleman et al.   PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC

Ground-based demonstration of the European Laser Timing (ELT) experiment

(2010) K.U. Schreiber et al.   IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL

Coherent optical link through the turbulent atmosphere

(2010) Khelifa Djerroud et al.   OPTICS LETTERS

Optical Clocks and Relativity

(2010) C. W. Chou et al.   SCIENCE

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

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

Optical frequency transfer via 146 km fiber link with 10^−19 relative accuracy

(2009) G. Grosche et al.   OPTICS LETTERS

Long-distance frequency transfer over an urban fiber link using optical phase stabilization

(2008) H. Jiang et al.   JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

High-stability transfer of an optical frequency over long fiber-optic links

(2008) P. A. Williams et al.   JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

New Limits on Coupling of Fundamental Constants to Gravity UsingSr87Optical Lattice Clocks

(2008) S. Blatt et al.   PHYSICAL REVIEW LETTERS

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

Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place

(2008) T. Rosenband et al.   SCIENCE