Long-lived metrological spin squeezing

Long-lived metrological spin squeezing

Long-lived metrological spin squeezing Atomic clocks and sensors are among the most precise measurement instruments in the world, but they can still be improved. Indeed, all of them so far use uncorrelated atoms, creating statistical noise known as quantum projection...
Nancy Paul awarded ERC Starting Grant 2023!

Nancy Paul awarded ERC Starting Grant 2023!

Nancy Paul awarded ERC Starting Grant 2023! © Timothe Paire, CNRS Nancy Paul, a CNRS researcher working in the Metrology and Fundamental Tests group, has been awarded a prestigious ERC Starting Grant. Nancy’s project, PAX (antiProtonic Atom X-ray spectroscopy), will...
The final results of the MICROSCOPE mission reach record precision

The final results of the MICROSCOPE mission reach record precision

The final results of the MICROSCOPE mission reach record precision     The MICROSCOPE mission has just confirmed the principle of equivalence with a record precision of a few 10-15. It thus proves that bodies fall in vacuum with the same acceleration regardless...
SUPERFLUID HELIUM AND NEGATIVE PRESSURES

SUPERFLUID HELIUM AND NEGATIVE PRESSURES

SUPERFLUID HELIUM AND NEGATIVE PRESSURES     Low temperature liquid helium-4 is a model material for condensed matter physics for two reasons. First, atomic interactions are weak and quantum effects play an important role on the macroscopic scale. Secondly,...
Enigmatic black holes revealed by gravitational waves

Enigmatic black holes revealed by gravitational waves

Enigmatic black holes revealed by gravitational waves  This is the biggest catch to date for the LIGO and Virgo gravitational wave detectors: a black hole with the mass of 142 suns, resulting from the fusion of two black holes of 85 and 65 times the mass of Sun. The...