SYRTE

Non destructive micro-wave detection of coherent quantum dynamics in a laser-cooled atom sample

27 February 2021

A new method of nondestructive detection of the quantum state of laser-cooled atoms has been demonstrated by a SYRTE team. Non-destructive methods, which preserve the state of the cold atom gas almost intact after its measurement, is one of the important objectives set by the ten-year program for the development of quantum technologies as defined by the European Union. It is also an important technological milestone that has just been passed for the industrial manufacture of compact cold atom quantum sensors.
Record-breaking laser link to test relativity and earth science applications

22 January 2021

A Franco-Australian team has set a new world record for frequency-stabilized laser transmission by combining phase stabilization technology with advanced self-guided optical terminals. Together, these technologies made it possible to send laser signals from one point to another by correcting fluctuations introduced by atmospheric turbulence. This is the world’s most accurate method for comparing clocks between two distinct locations.
Comparison of optical clocks by satellite

15 January 2021

A direct comparison of five optical clocks and six atomic fountains, located at INRIM, LNE-SYRTE, NPL and PTB, was performed using two high-performance satellite techniques: broadband TWSTFT and GPS PPP. This was the first time that very wide band (20 Mchip/s) pseudo-random noise codes available on commercial TWSTFT modems were used for optical clock comparisons. This campaign represented the most comprehensive coordinated simultaneous operation of optical clocks to date.
T-REFIMEVE winner of the call PIA 3 Equipements Structurants pour la Recherche (ESR/Equipex)

18 December 2020

T-REFIMEVE, coordinated by Laboratoire de Physique des Lasers, and co-coordinated by SYRTE, winners of the call for Equipements structurants pour la recherche
Pacôme Delva is awarded the 2020 Medal of the Academia of Air and Space

8 December 2020

Pacôme Delva is awarded the 2020 Medal of the Academia of Air and Space
Denis Savoie is the winner the Gaïa 2020 prize "Histoire et Recherche"

19 November 2020

Denis Savoie, an associate member of SYRTE, a recognized expert in sundials, is the winner of the Gaïa 2020 Prize!
Publication of the book "Geophysical Modeling of the Polar Motion" by Editions de Gruyter

2 November 2020

Christian Bizouard, Geophysical Modeling of the Polar Motion, De Gruyter Studies in Mathematical Physics, 31, 372 p.
Rémi Geiger junior member of Institut Universitaire de France

30 September 2020

Rémi Geiger is nominated as junior member of IUF as of 1st october, 2020
Did you know? The LNE-SYRTE of Observatoire de Paris is a partner of the Service National d’Observation (SNO) Gravimétrie.

2 September 2020

Four different French institutions (EOST in Strasbourg, OBSPM in Paris, OREME in Montpellier and LSSB in Rustrel) operate four different sites in France that contribute to the International Geodynamic and Tidal Service IGETS.
Iodine frequency stabilized laser for ground tests of LISA mission

20 August 2020

An all-fibered frequency-stabilized laser source device whose volume does not exceed 30 liters is being developed at SYRTE by the optical frequency metrology team. This device consists of a telecom C-band laser source at 1.5 µm (near IR) supplemented by an original frequency tripling device developed and patented by SYRTE. The device is then associated with a molecular transition of iodine to 515 nm (green) which serves as a frequency reference.

It is a leader in time and frequenciy metrology and is also specialized in Earth rotation, celestial reference frame and history of Astronomy.
SYRTE has a multidisciplinary research activity with transverse expertise in theory, instrumentation and data analysis and various goals from fundamental physics tests to industrial transfers.It is founder membre of Laboratoire d’Excellence du Programme Investissements d’Avenir FIRST-TF.

It has in charge several international services. Associated with the LNE - Laboratoire National de Métrologie et d’Essais - the SYRTE has the responsability of the national reference time and frequence. With the IERS (International Earth Rotation Service), it deliver Earth rotation parameters and other services.

Its teams take part in training and education by giving university lectures and also spread scientific culture by organizing public talks.

Heure légale française [...]

Non destructive micro-wave detection of coherent quantum dynamics in a laser-cooled atom sample

Record-breaking laser link to test relativity and earth science applications

Comparison of optical clocks by satellite

T-REFIMEVE winner of the call PIA 3 Equipements Structurants pour la Recherche (ESR/Equipex)

Pacôme Delva is awarded the 2020 Medal of the Academia of Air and Space

Denis Savoie is the winner the Gaïa 2020 prize "Histoire et Recherche"

Publication of the book "Geophysical Modeling of the Polar Motion" by Editions de Gruyter

Rémi Geiger junior member of Institut Universitaire de France

Did you know? The LNE-SYRTE of Observatoire de Paris is a partner of the Service National d’Observation (SNO) Gravimétrie.

Iodine frequency stabilized laser for ground tests of LISA mission