Application of spin squeezing in free space atomic sensors
Abstract/Contents
- Abstract
- Atomic sensors measure a variety of physical quantities with ensembles of atoms. With careful engineering, the resolution of the atomic sensors will reach the quantum-projection limit. To beat this limit and further improve the resolution, spin squeezing, a specific entangled state, can be utilized. In this thesis, I will introduce efforts in integrating cavity-generated spin squeezed state into free space atomic sensors; specifically, atomic fountain clocks and atom interferometers. First, I will introduce two methods to retrieve spin squeezing in free space. The first method is based on an optical cavity and the second one uses a CMOS camera. The cavity method retrieves almost all the squeezing at short release time and the retrieved squeezing degrades at long release time. The study of this degradation leads to the understanding of the effects of coupling homogeneity loss. The application of the camera method successfully results in a free space Ramsey spectroscopy 5.8dB below quantum-projection limit, which is an important step to build an atomic fountain clock. Finally, I will detail the laser systems we constructed to do atom interferometry based on Raman transitions.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2021; ©2021 |
| Publication date | 2021; 2021 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Wu, Yunfan, (Applied physics researcher) |
|---|---|
| Degree supervisor | Kasevich, Mark A |
| Thesis advisor | Kasevich, Mark A |
| Thesis advisor | Hollberg, Leo (Leo William) |
| Thesis advisor | Safavi-Naeini, Amir H |
| Degree committee member | Hollberg, Leo (Leo William) |
| Degree committee member | Safavi-Naeini, Amir H |
| Associated with | Stanford University, Department of Applied Physics |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Yunfan Wu. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis Ph.D. Stanford University 2021. |
| Location | https://purl.stanford.edu/hm338vy9752 |
Access conditions
- Copyright
- © 2021 by Yunfan Wu
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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