Atomic clock performance enabling geodesy below the centimetre level
Sign Up to like & getrecommendations! Published in 2018 at "Nature"
DOI: 10.1038/s41586-018-0738-2
Abstract: The passage of time is tracked by counting oscillations of a frequency reference, such as Earth’s revolutions or swings of a pendulum. By referencing atomic transitions, frequency (and thus time) can be measured more precisely… read more here.
Keywords: frequency; time; performance; clock performance ... See more keywords
Study of additive manufactured microwave cavities for pulsed optically pumped atomic clock applications
Sign Up to like & getrecommendations! Published in 2018 at "Applied Physics Letters"
DOI: 10.1063/1.5019444
Abstract: Additive manufacturing (AM) of passive microwave components is of high interest for the cost-effective and rapid prototyping or manufacture of devices with complex geometries. Here, we present an experimental study on the properties of recently… read more here.
Keywords: study additive; microwave; microwave cavities; additive manufactured ... See more keywords
194 nm microplasma lamps driven by excitation transfer: optical sources for the 199Hg ion atomic clock and photochemistry
Sign Up to like & getrecommendations! Published in 2022 at "Plasma Sources Science and Technology"
DOI: 10.1088/1361-6595/ac5c5c
Abstract: A series of miniature, microcavity plasma lamps emitting predominantly at 194 nm has been successfully developed and tested as the optical pump for the microwave 199Hg-ion atomic clock (40.507 GHz), replacing low pressure, RF-powered Ar/Hg… read more here.
Keywords: 199hg ion; excitation; ion; ion atomic ... See more keywords
Stabilizing Rabi oscillation of a charge qubit via the atomic clock technique
Sign Up to like & getrecommendations! Published in 2018 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aaa643
Abstract: We propose a superconducting circuit-atom hybrid, where the Rabi oscillation of single excess Cooper pair in the island is stabilized via the common atomic-clock technique. The noise in the superconducting circuit is mapped onto the… read more here.
Keywords: charge qubit; clock technique; oscillation; rabi oscillation ... See more keywords
Improving the Q Factor of an Optical Atomic Clock Using Quantum Nondemolition Measurement
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review X"
DOI: 10.1103/physrevx.10.041052
Abstract: Quantum non-demolition (QND) measurement is a remarkable tool for the manipulation of quantum systems. It allows specific information to be extracted while still preserving fragile quantum observables of the system. Here we apply cavity-based QND… read more here.
Keywords: measurement; clock; improving factor; clock using ... See more keywords
ULPAC: A Miniaturized Ultralow-Power Atomic Clock
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2019.2941004
Abstract: This article introduces a chip-scale ultralow-power atomic clock (ULPAC) in the microwave frequency region. A new suspended quantum package architecture along with a fully integrated frequency probing and locking loop implemented in CMOS technology results… read more here.
Keywords: ultralow power; atomic clock; frequency; power atomic ... See more keywords
Electromagnetically induced absorption scheme for vapor-cell atomic clock.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.036034
Abstract: A dual-frequency light field scheme, composed of counterpropagating pump and probe light waves with equal circular polarizations and different intensities, is proposed for the detection of subnatural-linewidth electromagnetically induced absorption (EIA) resonances. In this scheme,… read more here.
Keywords: vapor cell; induced absorption; scheme; electromagnetically induced ... See more keywords