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Uspekhi Fizicheskikh Nauk, 2018, Volume 188, Number 2, Pages 221–230
DOI: https://doi.org/10.3367/UFNr.2017.05.038131
(Mi ufn5926)
 

This article is cited in 11 scientific papers (total in 11 papers)

INSTRUMENTS AND METHODS OF INVESTIGATION
1000TH ISSUE OF USPEKHI FIZICHESKIKH NAUK JOURNAL. INSTRUMENTS AND METHODS OF INVESTIGATION

Accurate frequency and time dissemination in the optical domain

K. Yu. Khabarovaa, E. S. Kalganovaa, N. N. Kolachevskyabc

a Lebedev Physical Institute, Russian Academy of Sciences, Moscow
b International Center for Quantum Optics and Quantum Technologies (the Russian Quantum Center), Moscow, Skolkovo
c National Engineering Physics Institute "MEPhI", Moscow
References:
Abstract: The development of the optical frequency comb technique has enabled a wide use of atomic optical clocks by allowing frequency conversion from the optical to the radio frequency range. Today, the fractional instability of such clocks has reached the record eighteen-digit level, two orders of magnitude better than for cesium fountains representing the primary frequency standard. This is paralleled by the development of techniques for transferring accurate time and optical frequency signals, including fiber links. With this technology, the fractional instability of transferred frequency can be lowered to below $10^{-18}$ with an averaging time of 1000 s for a 1000 km optical link. At a distance of 500 km, a time signal uncertainty of 250 ps has been achieved. Optical links allow comparing optical clocks and creating a synchronized time and frequency standard network at a new level of precision. Prospects for solving new problems arise, including the determination of the gravitational potential, the measurement of the continental Sagnac effect, and precise tests of fundamental theories.
Received: February 3, 2017
Revised: May 12, 2017
Accepted: May 22, 2017
English version:
Physics–Uspekhi, 2018, Volume 61, Issue 2, Pages 203–211
DOI: https://doi.org/10.3367/UFNe.2017.05.038131
Bibliographic databases:
Document Type: Article
PACS: 06.20.Jr, 06.30.Ft, 12.20.Fv, 32.10.Fn, 32.30.Jc, 42.62.Fi
Language: Russian
Citation: K. Yu. Khabarova, E. S. Kalganova, N. N. Kolachevsky, “Accurate frequency and time dissemination in the optical domain”, UFN, 188:2 (2018), 221–230; Phys. Usp., 61:2 (2018), 203–211
Citation in format AMSBIB
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  • This publication is cited in the following 11 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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    Успехи физических наук Physics-Uspekhi
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