Optical clock based on ultra-cold calcium atom

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F25%3A00635550" target="_blank" >RIV/68081731:_____/25:00635550 - isvavai.cz</a>

Result on the web

<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13508/1350815/Optical-clock-based-on-ultra-cold-calcium-atom/10.1117/12.3056658.short" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13508/1350815/Optical-clock-based-on-ultra-cold-calcium-atom/10.1117/12.3056658.short</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.3056658" target="_blank" >10.1117/12.3056658</a>

Result language

angličtina

Original language name

Optical clock based on ultra-cold calcium atom

Original language description

A clock is a device that uses a stable oscillation pattern as a reference (i.e. pendulum, quartz). An atomic clock is a laser whose frequency is stabilised relative to a narrow optical atomic transition. Thus, the oscillator, in this case, is a trapped and isolated atom with a natural, very high oscillation rate. Thanks to this revolutionary idea and the evolution of atomic frequency and time standards have taken a giant leap forward. For nearly 100 years, the atomic frequency standard played a critical role in basic science and precision measurement. During this period, the increasing need for more precise timing and synchronisation for various applications, including navigation or tests of fundamental physics, has demanded oscillators with higher frequencies and higher performance. This paper introduces the design and instrumentation needed to build an optical reference based on an ultra-cold calcium ion that we built at our Institute of Scientific Instruments in BrThe isolated, trapped, and laser-cooled ion has a stable oscillation rate in hundreds of terahertz. In the most recent results, we demonstrate that our frequency reference reaches the stability or instability of 5,9 parts in a quadrillion (1 followed by 16 zeros) in just a few thousand seconds. The measured full width at half maximum of the frequency stabilised clock laser is 20 Hz.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

<a href="/en/project/EH22_008%2F0004649" target="_blank" >EH22_008/0004649: Quantum Engineering and Nanotechnology</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

23rd Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics

ISBN

9781510688087

ISSN

0277-786X

e-ISSN

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Number of pages

3

Pages from-to

1350815

Publisher name

SPIE

Place of publication

Bellingham

Event location

Štrbské Pleso

Event date

Sep 2, 2024

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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