Integration of spin squeezed states into free space atomic sensors
Abstract/Contents
- Abstract
- Atomic sensors utilize cold atom ensembles to measure a variety of observables, including magnetism, time, acceleration, and gravity, with high precision. Each type of sensor has a specific sequence of laser light to manipulate the quantum states of the atoms such that they measure the desired observable. For well optimized sensors, the ultimate resolution is determined by the quantum projection noise (QPN), a limit set by the Heisenberg uncertainty principle. The QPN is typically reduced by either increasing the number of atoms or by increasing the time between laser pulses. Application parameters, such as physical size or repetition rate, limit the extent of these improvements. Quantum entanglement through spin squeezing provides a third avenue for increasing the resolution of sensors. In this thesis, I will describe the methods I developed to utilize cavity generated spin squeezed states in free space atomic clocks and gravimeters. First, I will detail the fluorescence detection procedure, including both hardware and software techniques, with noise low enough to readout states with variance below the QPN. The ultimate resolution limit of our system is 690 microradians. I will then present the results of a successful integration of these states into a Ramsey sequence capable of reducing the averaging time of an atomic clock by three times. Finally, I will report the status of the laser system constructed to drive velocity sensitive Raman transitions and its ability to create useful beamsplitter operations.
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 | Malia, Benjamin Karl |
|---|---|
| Degree supervisor | Kasevich, Mark A |
| Thesis advisor | Kasevich, Mark A |
| Thesis advisor | Hogan, Jason |
| Thesis advisor | Schleier-Smith, Monika |
| Degree committee member | Hogan, Jason |
| Degree committee member | Schleier-Smith, Monika |
| Associated with | Stanford University, Department of Physics |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Benjamin Karl Malia. |
|---|---|
| Note | Submitted to the Department of Physics. |
| Thesis | Thesis Ph.D. Stanford University 2021. |
| Location | https://purl.stanford.edu/kd437ws5619 |
Access conditions
- Copyright
- © 2021 by Benjamin Karl Malia
- License
- This work is licensed under a Creative Commons Attribution 3.0 Unported license (CC BY).
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