The time-programmable frequency comb and its use in quantum-limited ranging
Two decades after its invention, the classic self-referenced frequency comb laser is an
unrivalled ruler for frequency, time and distance metrology owing to the rigid spacing of its …
unrivalled ruler for frequency, time and distance metrology owing to the rigid spacing of its …
Comparing ultrastable lasers at 7 × 10−17 fractional frequency instability through a 2220 km optical fibre network
Ultrastable lasers are essential tools in optical frequency metrology enabling unprecedented
measurement precision that impacts on fields such as atomic timekee**, tests of …
measurement precision that impacts on fields such as atomic timekee**, tests of …
Optical clocks at sea
Deployed optical clocks will improve positioning for navigational autonomy, provide remote
time standards for geophysical monitoring and distributed coherent sensing, allow time …
time standards for geophysical monitoring and distributed coherent sensing, allow time …
Coherent phase transfer for real-world twin-field quantum key distribution
Quantum mechanics allows distribution of intrinsically secure encryption keys by optical
means. Twin-field quantum key distribution is one of the most promising techniques for its …
means. Twin-field quantum key distribution is one of the most promising techniques for its …
Roadmap towards the redefinition of the second
N Dimarcq, M Gertsvolf, G Mileti, S Bize, CW Oates… - Metrologia, 2024 - iopscience.iop.org
This paper outlines the roadmap towards the redefinition of the second, which was recently
updated by the CCTF Task Force created by the CCTF in 2020. The main achievements of …
updated by the CCTF Task Force created by the CCTF in 2020. The main achievements of …
Software and techniques for VLBI data processing and analysis
M Janssen, JF Radcliffe, J Wagner - Universe, 2022 - mdpi.com
Very-long-baseline interferometry (VLBI) is a challenging observational technique, which
requires in-depth knowledge about radio telescope instrumentation, interferometry, and the …
requires in-depth knowledge about radio telescope instrumentation, interferometry, and the …
An accurate and robust metrological network for coherent optical frequency dissemination
E Cantin, M Tønnes, R Le Targat… - New Journal of …, 2021 - iopscience.iop.org
We introduce multi-branch repeater laser stations (MLSs) for the dissemination of an ultra-
stable signal from one point to multiple users and the simultaneous evaluation of the stability …
stable signal from one point to multiple users and the simultaneous evaluation of the stability …
Absolute frequency metrology of buffer-gas-cooled molecular spectra at 1 kHz accuracy level
By reducing both the internal and translational temperature of any species down to a few
kelvins, the buffer-gas-cooling (BGC) technique has the potential to dramatically improve the …
kelvins, the buffer-gas-cooling (BGC) technique has the potential to dramatically improve the …
Coherent optical-fiber link across Italy and France
C Clivati, M Pizzocaro, EK Bertacco, S Condio… - Physical Review …, 2022 - APS
The dissemination of atomic clocks with fiber-based techniques finds application in the fields
of metrology, fundamental physics, navigation, and spectroscopy but is a challenge in terms …
of metrology, fundamental physics, navigation, and spectroscopy but is a challenge in terms …
Long-haul high precision frequency dissemination based on dispersion correction
Y Chen, H Dai, H Si, F Wang, B Wang… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Aiming at the adverse effects of fiber dispersion over long-distance frequency dissemination,
a dispersion correction scheme based on chirped fiber Bragg grating (CFBG) is proposed …
a dispersion correction scheme based on chirped fiber Bragg grating (CFBG) is proposed …