Motional state analysis of a trapped ion by ultra-narrowband composite pulses
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913665900347392 |
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| author | Mallweger, Marion Guevara-Bertsch, Milena Torosov, Boyan T. Thomm, Robin Kuk, Natalia Parke, Harry Roos, Christian F. Higgins, Gerard Hennrich, Markus Vitanov, Nikolay V. |
| author_facet | Mallweger, Marion Guevara-Bertsch, Milena Torosov, Boyan T. Thomm, Robin Kuk, Natalia Parke, Harry Roos, Christian F. Higgins, Gerard Hennrich, Markus Vitanov, Nikolay V. |
| contents | In this work, we present a method for measuring the motional state of a two-level system coupled to a harmonic oscillator. Our technique uses ultra-narrowband composite pulses on the blue sideband transition to scan through the populations of the different motional states. Our approach does not assume any previous knowledge of the motional state distribution and is easily implemented. It is applicable both inside and outside of the Lamb-Dicke regime. For higher phonon numbers especially, the composite pulse sequence can be used as a filter for measuring phonon number ranges. We demonstrate this measurement technique using a single trapped ion and show good detection results with the numerically evaluated pulse sequence. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_10041 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Motional state analysis of a trapped ion by ultra-narrowband composite pulses Mallweger, Marion Guevara-Bertsch, Milena Torosov, Boyan T. Thomm, Robin Kuk, Natalia Parke, Harry Roos, Christian F. Higgins, Gerard Hennrich, Markus Vitanov, Nikolay V. Quantum Physics In this work, we present a method for measuring the motional state of a two-level system coupled to a harmonic oscillator. Our technique uses ultra-narrowband composite pulses on the blue sideband transition to scan through the populations of the different motional states. Our approach does not assume any previous knowledge of the motional state distribution and is easily implemented. It is applicable both inside and outside of the Lamb-Dicke regime. For higher phonon numbers especially, the composite pulse sequence can be used as a filter for measuring phonon number ranges. We demonstrate this measurement technique using a single trapped ion and show good detection results with the numerically evaluated pulse sequence. |
| title | Motional state analysis of a trapped ion by ultra-narrowband composite pulses |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2402.10041 |