Read article: Phase shift in optical cavities could detect low-frequency gravitational waves
Phase shift in optical cavities could detect low-frequency gravitational waves
Global network could pinpoint astronomical sources
Read article: Phase shift in optical cavities could detect low-frequency gravitational waves
Read article: Optical gyroscope detects Earth’s rotation with the highest precision yet
Optical gyroscope detects Earth’s rotation with the highest precision yet
With further improvements, the instrument could enable direct tests of relativistic effects
Read article: How to keep the second law of thermodynamics from limiting clock precision
How to keep the second law of thermodynamics from limiting clock precision
Certain types of quantum clocks could circumvent thermal dissipation, say physicists
Read article: New definition of second ticks closer after international optical-clock comparison
New definition of second ticks closer after international optical-clock comparison
Fibre and satellites connections span two continents
Read article: The evolution of the metre: How a product of the French Revolution became a mainstay of worldwide scientific collaboration
The evolution of the metre: How a product of the French Revolution became a mainstay of worldwide scientific collaboration
Physics World corresponding editor Isabelle Dumé reports from a Paris symposium celebrating the 150th anniversary of the Metre Convention
Read article: Magnetically launched atoms sense motion
Magnetically launched atoms sense motion
New method in atom interferometry is used for inertial sensing
Read article: Thermometer uses Rydberg atoms to make calibration-free measurements
Thermometer uses Rydberg atoms to make calibration-free measurements
New technique uses black-body radiation to make direct measurements with low uncertainty
Read article: New candidate emerges for a universal quantum electrical standard
New candidate emerges for a universal quantum electrical standard
Approach based on the quantum anomalous Hall effect does away with the need for applied magnetic fields
Read article: Solid-state nuclear clocks brought closer by physical vapour deposition
Solid-state nuclear clocks brought closer by physical vapour deposition
Fabrication technique reduces amount of expensive isotope needed
Read article: Multi-qubit entangled states boost atomic clock and sensor performance
Multi-qubit entangled states boost atomic clock and sensor performance
Greenberger–Horne–Zeilinger states increase measurement frequency
