Saved in:
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.05705 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908355779362816 |
|---|---|
| author | Ohta, Morihiro Lee, Ching-Ping Sietses, Vincent P. M. Kostylev, Ivan Ball, Jason R. Moroshkin, Petr Hamamoto, Tatsuki Kobayashi, Yutaka Onoda, Shinobu Ohshima, Takeshi Isoya, Junichi Takahashi, Hiroki Kubo, Yuimaru |
| author_facet | Ohta, Morihiro Lee, Ching-Ping Sietses, Vincent P. M. Kostylev, Ivan Ball, Jason R. Moroshkin, Petr Hamamoto, Tatsuki Kobayashi, Yutaka Onoda, Shinobu Ohshima, Takeshi Isoya, Junichi Takahashi, Hiroki Kubo, Yuimaru |
| contents | Microwave quantum technologies require amplification of weak signals with minimal added noise at millikelvin temperatures. This stringent demand has been met with superconducting parametric amplifiers. While masers offer another fundamental approach, their dependence on cryogenic operation has historically posed challenges for classical communication technologies -- a barrier that does not apply to microwave quantum technologies. In this work, we demonstrate an ultra-low-noise maser amplifier utilizing impurity spins in diamond at millikelvin temperatures. We achieve power gains exceeding $\mathrm{30\,dB}$, a minimum noise temperature of $\mathrm{0.86\,K}$ (corresponding to $2.2$ noise photons), and a maximum $\mathrm{1\,\text{dB}}$ output compression point of $\mathrm{-63\,dBm}$ at $\mathrm{6.595\,\text{GHz}}$. Our results establish masers as viable components of microwave quantum technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_05705 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A near-quantum-limited diamond maser amplifier operating at millikelvin temperatures Ohta, Morihiro Lee, Ching-Ping Sietses, Vincent P. M. Kostylev, Ivan Ball, Jason R. Moroshkin, Petr Hamamoto, Tatsuki Kobayashi, Yutaka Onoda, Shinobu Ohshima, Takeshi Isoya, Junichi Takahashi, Hiroki Kubo, Yuimaru Quantum Physics Microwave quantum technologies require amplification of weak signals with minimal added noise at millikelvin temperatures. This stringent demand has been met with superconducting parametric amplifiers. While masers offer another fundamental approach, their dependence on cryogenic operation has historically posed challenges for classical communication technologies -- a barrier that does not apply to microwave quantum technologies. In this work, we demonstrate an ultra-low-noise maser amplifier utilizing impurity spins in diamond at millikelvin temperatures. We achieve power gains exceeding $\mathrm{30\,dB}$, a minimum noise temperature of $\mathrm{0.86\,K}$ (corresponding to $2.2$ noise photons), and a maximum $\mathrm{1\,\text{dB}}$ output compression point of $\mathrm{-63\,dBm}$ at $\mathrm{6.595\,\text{GHz}}$. Our results establish masers as viable components of microwave quantum technologies. |
| title | A near-quantum-limited diamond maser amplifier operating at millikelvin temperatures |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2505.05705 |