Directly measured squeeze factors over GHz bandwidth from monolithic ppKTP resonators
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909415494385664 |
|---|---|
| author | Tohermes, Benedict Verclas, Sophie Schnabel, Roman |
| author_facet | Tohermes, Benedict Verclas, Sophie Schnabel, Roman |
| contents | Squeezed vacuum states of light with bandwidths in the gigahertz range are required for ultrafast quantum sensors, for high-bandwidth QKD and for optical quantum computers. Here we present squeeze factors of monolithic periodically poled KTP (ppKTP) resonators measured with two laboratory-built balanced homodyne detectors with gigahertz bandwidth. We realise two complete systems without selection of optical or electronic hardware components to test the reproducibility without rejects. As expected, the systems show clear spectral differences. However, both achieve directly measured squeeze factors in the order of 3 dB over a GHz bandwidth, which is achieved here for the first time. Our direct measurement of quantum correlation is suitable for increasing the key rate of one-sided, device-independent QKD. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_03221 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Directly measured squeeze factors over GHz bandwidth from monolithic ppKTP resonators Tohermes, Benedict Verclas, Sophie Schnabel, Roman Quantum Physics Optics Squeezed vacuum states of light with bandwidths in the gigahertz range are required for ultrafast quantum sensors, for high-bandwidth QKD and for optical quantum computers. Here we present squeeze factors of monolithic periodically poled KTP (ppKTP) resonators measured with two laboratory-built balanced homodyne detectors with gigahertz bandwidth. We realise two complete systems without selection of optical or electronic hardware components to test the reproducibility without rejects. As expected, the systems show clear spectral differences. However, both achieve directly measured squeeze factors in the order of 3 dB over a GHz bandwidth, which is achieved here for the first time. Our direct measurement of quantum correlation is suitable for increasing the key rate of one-sided, device-independent QKD. |
| title | Directly measured squeeze factors over GHz bandwidth from monolithic ppKTP resonators |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2412.03221 |