Toward a New Generation of Compact Transportable Yb<sup>+</sup> Optical Clocks
Optical atomic clocks are currently one of the most sensitive tools making it possible to precisely test the fundamental symmetry properties of spacetime and Einstein’s theory of relativity. At the same time, the extremely high stability and accuracy of compact transportable optical clocks open new...
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MDPI AG
2022-10-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/14/10/2213 |
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| author | Ksenia Khabarova Denis Kryuchkov Alexander Borisenko Ilia Zalivako Ilya Semerikov Mikhail Aksenov Ivan Sherstov Timur Abbasov Anton Tausenev Nikolay Kolachevsky |
| author_facet | Ksenia Khabarova Denis Kryuchkov Alexander Borisenko Ilia Zalivako Ilya Semerikov Mikhail Aksenov Ivan Sherstov Timur Abbasov Anton Tausenev Nikolay Kolachevsky |
| author_sort | Ksenia Khabarova |
| collection | DOAJ |
| description | Optical atomic clocks are currently one of the most sensitive tools making it possible to precisely test the fundamental symmetry properties of spacetime and Einstein’s theory of relativity. At the same time, the extremely high stability and accuracy of compact transportable optical clocks open new perspectives in important fields, such as satellite navigation, relativistic geodesy, and the global time and frequency network. Our project aimed to develop a compact transportable optical clock based on a single ytterbium ion. We present the first prototype of the Yb<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>+</mo></msup></semantics></math></inline-formula> clock (298 kg in 1 m<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>3</mn></msup></semantics></math></inline-formula>) and present several solutions aimed to improve the clock’s robustness to approach the demands of a space-qualified system. We present spectroscopic studies of a 435.5 nm quadrupole clock transition with Fourier-limited spectra of 25 Hz. The estimated instability of the output frequency at 1 GHz, which was down-converted with an optical frequency comb (OFC), is at the level of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>9</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>15</mn></mrow></msup><mo>/</mo><msqrt><mi>τ</mi></msqrt></mrow></semantics></math></inline-formula>, and the long-term instability and inaccuracy are at the level of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>5</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>16</mn></mrow></msup></mrow></semantics></math></inline-formula>. As the next steps, we present a new design for the clock laser and the OFC. |
| first_indexed | 2024-03-09T19:26:14Z |
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| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-09T19:26:14Z |
| publishDate | 2022-10-01 |
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| series | Symmetry |
| spelling | doaj.art-cd22c578d627431fbf2e9f4aa508b2012023-11-24T02:54:25ZengMDPI AGSymmetry2073-89942022-10-011410221310.3390/sym14102213Toward a New Generation of Compact Transportable Yb<sup>+</sup> Optical ClocksKsenia Khabarova0Denis Kryuchkov1Alexander Borisenko2Ilia Zalivako3Ilya Semerikov4Mikhail Aksenov5Ivan Sherstov6Timur Abbasov7Anton Tausenev8Nikolay Kolachevsky9P.N. Lebedev Physical Insitute of the Russian Academy of Science, Leninskiy Prospect 53, 119991 Moscow, RussiaP.N. Lebedev Physical Insitute of the Russian Academy of Science, Leninskiy Prospect 53, 119991 Moscow, RussiaP.N. Lebedev Physical Insitute of the Russian Academy of Science, Leninskiy Prospect 53, 119991 Moscow, RussiaP.N. Lebedev Physical Insitute of the Russian Academy of Science, Leninskiy Prospect 53, 119991 Moscow, RussiaP.N. Lebedev Physical Insitute of the Russian Academy of Science, Leninskiy Prospect 53, 119991 Moscow, RussiaP.N. Lebedev Physical Insitute of the Russian Academy of Science, Leninskiy Prospect 53, 119991 Moscow, RussiaSkolkovo Institute of Science and Technology, 121205 Moscow, RussiaSkolkovo Institute of Science and Technology, 121205 Moscow, RussiaAvesta Ltd., Fizicheskaya, 11, 108840 Troick, RussiaP.N. Lebedev Physical Insitute of the Russian Academy of Science, Leninskiy Prospect 53, 119991 Moscow, RussiaOptical atomic clocks are currently one of the most sensitive tools making it possible to precisely test the fundamental symmetry properties of spacetime and Einstein’s theory of relativity. At the same time, the extremely high stability and accuracy of compact transportable optical clocks open new perspectives in important fields, such as satellite navigation, relativistic geodesy, and the global time and frequency network. Our project aimed to develop a compact transportable optical clock based on a single ytterbium ion. We present the first prototype of the Yb<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mo>+</mo></msup></semantics></math></inline-formula> clock (298 kg in 1 m<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>3</mn></msup></semantics></math></inline-formula>) and present several solutions aimed to improve the clock’s robustness to approach the demands of a space-qualified system. We present spectroscopic studies of a 435.5 nm quadrupole clock transition with Fourier-limited spectra of 25 Hz. The estimated instability of the output frequency at 1 GHz, which was down-converted with an optical frequency comb (OFC), is at the level of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>9</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>15</mn></mrow></msup><mo>/</mo><msqrt><mi>τ</mi></msqrt></mrow></semantics></math></inline-formula>, and the long-term instability and inaccuracy are at the level of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>5</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>16</mn></mrow></msup></mrow></semantics></math></inline-formula>. As the next steps, we present a new design for the clock laser and the OFC.https://www.mdpi.com/2073-8994/14/10/2213<sup>171</sup>Yb<sup>+</sup>transportable optical clockspectroscopyquadrupole transitionoptical frequency comb |
| spellingShingle | Ksenia Khabarova Denis Kryuchkov Alexander Borisenko Ilia Zalivako Ilya Semerikov Mikhail Aksenov Ivan Sherstov Timur Abbasov Anton Tausenev Nikolay Kolachevsky Toward a New Generation of Compact Transportable Yb<sup>+</sup> Optical Clocks Symmetry <sup>171</sup>Yb<sup>+</sup> transportable optical clock spectroscopy quadrupole transition optical frequency comb |
| title | Toward a New Generation of Compact Transportable Yb<sup>+</sup> Optical Clocks |
| title_full | Toward a New Generation of Compact Transportable Yb<sup>+</sup> Optical Clocks |
| title_fullStr | Toward a New Generation of Compact Transportable Yb<sup>+</sup> Optical Clocks |
| title_full_unstemmed | Toward a New Generation of Compact Transportable Yb<sup>+</sup> Optical Clocks |
| title_short | Toward a New Generation of Compact Transportable Yb<sup>+</sup> Optical Clocks |
| title_sort | toward a new generation of compact transportable yb sup sup optical clocks |
| topic | <sup>171</sup>Yb<sup>+</sup> transportable optical clock spectroscopy quadrupole transition optical frequency comb |
| url | https://www.mdpi.com/2073-8994/14/10/2213 |
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