Results 21 to 30 of about 461 (244)
The 87Rubidium Atomic Clock Maser in Giant Stars [PDF]
Research Notes of the AAS, 2018 2 pages, published in ...
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Berry-phase gates for fast and robust control of atomic clock states
Physical Review Research, 2020 We propose and experimentally demonstrate a fast Berry-phase gate, which is implemented by picosecond-timescale optical pulses to make the qubit system of atomic clock states adiabatically evolve on a closed loop.
Yunheung Song, Jongseok Lim, Jaewook Ahn
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Measurement of Optical Rubidium Clock Frequency Spanning 65 Days
Sensors, 2022 Optical clocks are emerging as next-generation timekeeping devices with technological and scientific use cases. Simplified atomic sources such as vapor cells may offer a straightforward path to field use, but suffer from long-term frequency drifts and ...
Nathan D. Lemke +5 more
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Compact and frequency stabilized laser heads for Rubidium atomic clocks [PDF]
International Conference on Space Optics — ICSO 2012, 2017 We present the development and complete spectral characterization of our compact and frequency-stabilized laser heads, to be used for rubidium atomic clocks and basic spectroscopy. The light source is a Distributed Feed-Back (DFB) laser diode emitting at 780 nm or 795 nm.
Gaetano Mileti +5 more
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The ac stark shift and space-borne rubidium atomic clocks [PDF]
Journal of Applied Physics, 2016 Due to its small size, low weight, and low power consumption, the Rb atomic frequency standard (RAFS) is routinely the first choice for atomic timekeeping in space. Consequently, though the device has very good frequency stability (rivaling passive hydrogen masers), there is interest in uncovering the fundamental processes limiting its long-term ...
Formichella, V. +6 more
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High-precision Frequency Drift Compensation Study of High-performance Rubidium Atomic Clock
Chinese Journal of Magnetic ResonanceWith their high reliability, small size and low power consumption, rubidium atomic clocks are widely used in the fields of navigation, communication, etc. In particular, rubidium atomic clocks for navigation satellites have developed excellent stability.
XU Junqiu +5 more
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Molecular Oncology, EarlyView.Pair‐wise comparison of the CellSearch and FETCH enrichment technologies for circulating tumor cells (CTCs) from metastatic breast, prostate, and small cell lung cancer patients shows an increased capture of CTCs using FETCH enrichment. The clinical implementation of circulating tumor cells (CTCs) as a predictive tool for therapy efficacy in the ...
Michiel Stevens +6 more
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Algorithm for Taming Rubidium Atomic Clocks Based on Longwave (Loran-C) Timing Signals
Remote SensingThis paper explores effective methods for taming rubidium atomic clocks with longwave timing signals. In an in-depth analysis of the time-difference data between the 1PPS timing signal output from the ground-wave signal received by a long-wave receiver ...
Xiaolong Guan +6 more
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Properties of Rb CPT Atomic Clock at Subharmonic Microwave Modulation Frequencies
IEEE Photonics Journal, 2019 This letter presents for the first time a systematic study of an atomic frequency standard based on сoherent population trapping (CPT) effect in 87Rb vapour optically pumped with a multifrequency laser radiation formed with sidebands of a single ...
Daba Radnatarov +5 more
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Acute caffeine treatment protects the developing retina from ischemia‐induced cell death
FEBS Open Bio, EarlyView.Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento +6 more
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