Electric-field metrology of a terahertz frequency comb using Rydberg atoms
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866917096295759872 |
|---|---|
| author | Krokosz, Wiktor Nowosielski, Jan Kasza, Bartosz Borówka, Sebastian Mazelanik, Mateusz Wasilewski, Wojciech Parniak, Michał |
| author_facet | Krokosz, Wiktor Nowosielski, Jan Kasza, Bartosz Borówka, Sebastian Mazelanik, Mateusz Wasilewski, Wojciech Parniak, Michał |
| contents | Terahertz radiation finds an increasing number of applications, yet efficient generation and detection remain a challenge and an active area of research. In particular, the precise detection of weak and narrowband terahertz signals is notoriously difficult. Here, we employ a novel type of single-photon detector based on Rydberg atoms to both detect and calibrate a terahertz frequency comb over an octave-spanning range, yet with a MHz-level selectivity. We calibrate the intensity of the electric field of the comb against the fundamental atomic properties, while achieving the intensity (power) sensitivity down to 45.2 $\mathrm{fW\ cm^{-2}\ Hz^{-0.5}}$ (1.84 $\mathrm{fW\ Hz^{-0.5}}$) within a single mode of the frequency comb, all in a room-temperature operated setup. Our results elucidate the transition of terahertz frequency combs into the quantum regime, enabling high-precision and high-sensitivity spectroscopy. This breakthrough allows terahertz science to better leverage revolutionary techniques developed for optical frequency combs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_20698 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electric-field metrology of a terahertz frequency comb using Rydberg atoms Krokosz, Wiktor Nowosielski, Jan Kasza, Bartosz Borówka, Sebastian Mazelanik, Mateusz Wasilewski, Wojciech Parniak, Michał Optics Atomic Physics Quantum Physics Terahertz radiation finds an increasing number of applications, yet efficient generation and detection remain a challenge and an active area of research. In particular, the precise detection of weak and narrowband terahertz signals is notoriously difficult. Here, we employ a novel type of single-photon detector based on Rydberg atoms to both detect and calibrate a terahertz frequency comb over an octave-spanning range, yet with a MHz-level selectivity. We calibrate the intensity of the electric field of the comb against the fundamental atomic properties, while achieving the intensity (power) sensitivity down to 45.2 $\mathrm{fW\ cm^{-2}\ Hz^{-0.5}}$ (1.84 $\mathrm{fW\ Hz^{-0.5}}$) within a single mode of the frequency comb, all in a room-temperature operated setup. Our results elucidate the transition of terahertz frequency combs into the quantum regime, enabling high-precision and high-sensitivity spectroscopy. This breakthrough allows terahertz science to better leverage revolutionary techniques developed for optical frequency combs. |
| title | Electric-field metrology of a terahertz frequency comb using Rydberg atoms |
| topic | Optics Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2508.20698 |