Nanobolometer with ultralow noise equivalent power

Roope Kokkoniemi (Corresponding Author), Joonas Govenius, Visa Vesterinen, Russell E. Lake, András M. Gunyhó, Kuan Y. Tan, Slawomir Simbierowicz, Leif Grönberg, Janne Lehtinen, Mika Prunnila, Juha Hassel, Antti Lamminen, Olli Pentti Saira, Mikko Möttönen (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

38 Citations (Scopus)


Since the introduction of bolometers more than a century ago, they have been used in various applications ranging from chemical sensors, consumer electronics, and security to particle physics and astronomy. However, faster bolometers with lower noise are of great interest from the fundamental point of view and to find new use-cases for this versatile concept. We demonstrate a nanobolometer that exhibits roughly an order of magnitude lower noise equivalent power, 20zW∕Hz, than previously reported for any bolometer. Importantly, it is more than an order of magnitude faster than other low-noise bolometers, with a time constant of 30 μs at 60zW∕Hz. These results suggest a calorimetric energy resolution of 0.3 zJ = h × 0.4 THz with a time constant of 30 μs. Further development of this nanobolometer may render it a promising candidate for future applications requiring extremely low noise and high speed such as those in quantum technology and terahertz photon counting.
Original languageEnglish
Article number124
JournalCommunications Physics
Issue number1
Publication statusPublished - 1 Dec 2019
MoE publication typeA1 Journal article-refereed


We acknowledge the provision of facilities and technical support by Aalto University at OtaNano – Micronova Nanofabrication Center. We have received funding from the European Research Council under Consolidator Grant No. 681311 (QUESS) and under Proof-of-Concept Grant No. 727305 (SNABO), European Commission through H2020 program projects EFINED (grant agreement 766853) and QMiCS (grant agreement 820505, Quantum Flagship), the Academy of Finland through its Centers of Excellence Program (project nos 312300, 312059, and 312294) and grants (Nos. 314447, 314449, 276528, 305237, 308161, and 314302), the Vilho, Yrjö, and Kalle Väisälä Foundation, the Technology Industries of Finland Centennial Foundation, the Jane and Aatos Erkko Foundation, and the Finnish Cultural Foundation.


  • OtaNano


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