Projects per year
Personal profile
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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Collaborations and top research areas from the last five years
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HIOC: High-accuracy ion-based optical clocks
Lindvall, T. (Manager) & Wallin, A. (Participant)
1/05/24 → 30/04/27
Project: EU project
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TOCK: Transportable optical clocks for key comparisons
Lindvall, T. (Manager), Wallin, A. (Participant), Hanhijärvi, K. (Participant) & Fordell, T. (Participant)
EURAMET e.V. - European Partnership on Metrology
1/05/23 → 30/04/26
Project: EU project
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NaQCI.fi: National Quantum Communication Infrastructure in Finland
Seppänen, K. (PI), Ahola, K. (Participant), Cherchi, M. (Participant), Fordell, T. (Participant), Thomas, G. (Participant), Hanhijärvi, K. (Participant), Huusko, J. (Owner), Kalsta, A. (Participant), Koivisto, J. (Participant), Koskela, P. (Participant), Lehtikangas, J. (Participant), Lehtonen, S. (Participant), Lindvall, T. (Participant), Lintulampi, A. (Participant), Manninen, A. (Participant), Muurman, M. (Participant), Nikula, S. (Participant), Nissilä, J. (Participant), Ojakangas, K. (Participant), Ojasalo, K. (Participant), Ollikainen, V. (Participant), Pourjamal, S. (Participant), Puhakainen, P. (Participant), Rantakokko, M. (Participant), Ruponen, S. (Participant) & Wallin, A. (Participant)
1/01/23 → 31/12/25
Project: EU project
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Quantum QKD Demo
Seppänen, K. (PI), Nikula, S. (Participant), Hanhijärvi, K. (Participant), Fordell, T. (Participant), Manninen, A. (Participant), Pourjamal, S. (Participant), Wallin, A. (Participant), Ojasalo, K. (Participant), Koskela, P. (Participant), Lintulampi, A. (Participant) & Ollikainen, V. (Participant)
3/01/22 → 30/12/22
Project: Research
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WRITE: Precision time for industry
Wallin, A. (Manager) & Hanhijärvi, K. (Participant)
1/06/18 → 30/11/21
Project: EU project
Research output
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Closed-Loop Polarization Mode Dispersion Mitigation for Fibre-Optic Time and Frequency Transfer
Fordell, T., Wallin, A., Lindvall, T. & Hanhijärvi, K., 2025, (Accepted/In press) In: Optics Letters.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access -
Hybrid integrated GaSb/Si3N4 narrow linewidth (<50 kHz) distributed Bragg reflector laser
Ojanen, S.-P., Zia, N., Viheriälä, J., Koivusalo, E., Hilska, J., Quashef, A., Wallin, A., Hanhijärvi, K., Fordell, T. & Guina, M., 26 Aug 2024, In: Applied Physics Letters. 125, 9, 091106.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
Robust Optical Clocks for International Timescales (ROCIT)
Margolis, H. S., Godun, R. M., Huntemann, N., Le Targat, R., Pizzocaro, M., Zawada, M., Abgrall, M., Akamatsu, D., Álvarez Martínez, H., Amy-Klein, A., Andia, M., Benkler, E., Bhatt, N. M., Bilicki, S., Bize, S., Bober, M., Calonico, D., Cambier, V., Cantin, E. & Chardonnet, C. & 73 others, , Nov 2024, In: Journal of Physics: Conference Series. 2889, 012022.Research output: Contribution to journal › Article in a proceedings journal › Scientific
Open Access -
Detecting consistent patterns in pseudorange residuals in GNSS timing data
Kotilainen, M., Mäkelä, M., Hanhijärvi, K., Olkkonen, M.-K., Wallin, A., Fordell, T. & Kaasalainen, S., 8 Jun 2023, 2023 International Conference on Localization and GNSS, ICL-GNSS 2023 - Proceedings. Nurmi, J., Sospedra, J. T., Lohan, E.-S., Huerta, J. & Ometov, A. (eds.). IEEE Institute of Electrical and Electronic Engineers, 5 p. 10148921Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
2 Citations (Scopus) -
Noise-induced servo errors in optical clocks utilizing Rabi interrogation
Lindvall, T., Wallin, A. E., Hanhijärvi, K. & Fordell, T., 4 Jul 2023, In: Metrologia. 60, 4, 045008.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile1 Citation (Scopus)27 Downloads (Pure)
Press/Media
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Atomikellot pysyvät tarkassa ajassa käytännössä ikuisesti, mutta maapallo ei – lisäsekunneista on syntynyt ongelma, joka pitää ratkaista
13/11/23
1 Media contribution
Press/Media: Press / Media
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Suomen virallista aikaa mittaavista atomikelloista osa on vanhentumassa – ”Tällaisten kellojen valmistajia ei ole maailmassa kovin monta”
6/10/23
1 Media contribution
Press/Media: Press / Media
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Lehdistötiedote 12.1.2023: VTT MIKESin kehittämä optinen atomikello voi päästä maailman tarkimpaan kärkeen
12/01/23
1 Media contribution
Press/Media: Press / Media
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Tester visar att Finlands exaktaste klocka fungerar väl – skulle i teorin kunna gå fel med 1 sekund på 14 miljarder år
14/09/22
1 Media contribution
Press/Media: Press / Media
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