Cavity quantum electrodynamics with ensembles of ytterbium-171
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2019
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| Online Access: | http://hdl.handle.net/1721.1/120364 |
| _version_ | 1811090000872210432 |
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| author | Braverman, Boris |
| author2 | Vladan Vuletić. |
| author_facet | Vladan Vuletić. Braverman, Boris |
| author_sort | Braverman, Boris |
| collection | MIT |
| description | Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018. |
| first_indexed | 2024-09-23T14:29:32Z |
| format | Thesis |
| id | mit-1721.1/120364 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T14:29:32Z |
| publishDate | 2019 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1203642019-04-12T23:05:46Z Cavity quantum electrodynamics with ensembles of ytterbium-171 Braverman, Boris Vladan Vuletić. Massachusetts Institute of Technology. Department of Physics. Massachusetts Institute of Technology. Department of Physics. Physics. Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018. This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. Cataloged from student-submitted PDF version of thesis. Includes bibliographical references (pages 313-328). In this thesis, I present the realization of a system applying the tools of cavity quantum electrodynamics to an atomic optical lattice clock. We design and implement a unique experimental cavity structure, with a small radius of curvature mirror on one side and a large mirror on the other side. With this structure, we are able to probe ytterbium-171 atoms in both the weak and strong coupling regimes of cavity quantum electrodynamics. This asymmetric micromirror structure simultaneously offers strong light-atom coupling, mechanical robustness, and excellent access to a large cavity volume. We develop a simple but accurate model for strong light-atom interactions in our system, which allows us to predict the performance of both cavity-assisted quantum non demolition measurements of the atomic state, and the back-action of the probing light onto the atomic state. We find theoretically, and confirm experimentally, that probing the atom-cavity system with two frequencies at the vacuum Rabi peaks of a system with strong collective light-atom coupling generates the largest possible entanglement between the probing light and the atomic state. With this scheme, we demonstrate atomic number measurements within a factor of 2 of the quantum Fisher information limit. By using the quantum back-action of the probing light on the atomic ensemble, we perform squeezing by cavity feedback. We produce states with -11±1 dB of variance squeezing and 14±1 dB of anti squeezing. Using theoretical simulations, we show that states with near-unitary squeezing offer significant advantages for improving atomic clocks compared to previous work. The ability to load large atomic ensembles in the strong coupling regime in our system offers several routes to the generation of highly entangled non-Gaussian quantum states. Such states can be produced by heralded measurements, or by global atom-atom interactions based on unitary spin squeezing. Altogether, we realize a system of unprecedented versatility and great potential for performing a large variety of hybrid atomic clock and cavity QED experiments. by Boris Braverman. Ph. D. 2019-02-14T15:21:28Z 2019-02-14T15:21:28Z 2018 2018 Thesis http://hdl.handle.net/1721.1/120364 1083671419 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 328 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. Braverman, Boris Cavity quantum electrodynamics with ensembles of ytterbium-171 |
| title | Cavity quantum electrodynamics with ensembles of ytterbium-171 |
| title_full | Cavity quantum electrodynamics with ensembles of ytterbium-171 |
| title_fullStr | Cavity quantum electrodynamics with ensembles of ytterbium-171 |
| title_full_unstemmed | Cavity quantum electrodynamics with ensembles of ytterbium-171 |
| title_short | Cavity quantum electrodynamics with ensembles of ytterbium-171 |
| title_sort | cavity quantum electrodynamics with ensembles of ytterbium 171 |
| topic | Physics. |
| url | http://hdl.handle.net/1721.1/120364 |
| work_keys_str_mv | AT bravermanboris cavityquantumelectrodynamicswithensemblesofytterbium171 |