Robust atom optics for Bragg atom interferometry
Multi-photon Bragg diffraction is a powerful method for fast, coherent momentum transfer of atom waves. However, laser noise, Doppler detunings, and cloud expansion limit its efficiency in large momentum transfer (LMT) pulse sequences. We present simulation studies of robust Bragg pulses developed t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aceb15 |
| _version_ | 1797754675373539328 |
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| author | Garrett Louie Zilin Chen Tejas Deshpande Timothy Kovachy |
| author_facet | Garrett Louie Zilin Chen Tejas Deshpande Timothy Kovachy |
| author_sort | Garrett Louie |
| collection | DOAJ |
| description | Multi-photon Bragg diffraction is a powerful method for fast, coherent momentum transfer of atom waves. However, laser noise, Doppler detunings, and cloud expansion limit its efficiency in large momentum transfer (LMT) pulse sequences. We present simulation studies of robust Bragg pulses developed through numerical quantum optimal control. Optimized pulse performance under noise and cloud inhomogeneities is analyzed and compared to analogous Gaussian and adiabatic rapid passage pulses in simulated LMT Mach–Zehnder interferometry sequences. The optimized pulses maintain robust population transfer and phase response over a broader range of noise, resulting in superior contrast in LMT sequences with thermal atom clouds and intensity inhomogeneities. Large optimized LMT sequences use lower pulse area than Gaussian pulses, making them less susceptible to spontaneous emission loss. The optimized sequences maintain over five times better contrast with tens of $\hbar k$ momentum separation and offer more improvement with greater LMT. Such pulses could allow operation of Bragg atom interferometers with unprecedented sensitivity, improved contrast, and hotter atom sources. |
| first_indexed | 2024-03-12T17:37:00Z |
| format | Article |
| id | doaj.art-b32d0cac870e48e7b2990b1b17e8c980 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T17:37:00Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-b32d0cac870e48e7b2990b1b17e8c9802023-08-04T10:42:18ZengIOP PublishingNew Journal of Physics1367-26302023-01-0125808301710.1088/1367-2630/aceb15Robust atom optics for Bragg atom interferometryGarrett Louie0Zilin Chen1Tejas Deshpande2Timothy Kovachy3Department of Physics and Astronomy and Center for Fundamental Physics, Northwestern University , Evanston, IL 60208, United States of AmericaDepartment of Physics and Astronomy and Center for Fundamental Physics, Northwestern University , Evanston, IL 60208, United States of AmericaDepartment of Physics and Astronomy and Center for Fundamental Physics, Northwestern University , Evanston, IL 60208, United States of AmericaDepartment of Physics and Astronomy and Center for Fundamental Physics, Northwestern University , Evanston, IL 60208, United States of AmericaMulti-photon Bragg diffraction is a powerful method for fast, coherent momentum transfer of atom waves. However, laser noise, Doppler detunings, and cloud expansion limit its efficiency in large momentum transfer (LMT) pulse sequences. We present simulation studies of robust Bragg pulses developed through numerical quantum optimal control. Optimized pulse performance under noise and cloud inhomogeneities is analyzed and compared to analogous Gaussian and adiabatic rapid passage pulses in simulated LMT Mach–Zehnder interferometry sequences. The optimized pulses maintain robust population transfer and phase response over a broader range of noise, resulting in superior contrast in LMT sequences with thermal atom clouds and intensity inhomogeneities. Large optimized LMT sequences use lower pulse area than Gaussian pulses, making them less susceptible to spontaneous emission loss. The optimized sequences maintain over five times better contrast with tens of $\hbar k$ momentum separation and offer more improvement with greater LMT. Such pulses could allow operation of Bragg atom interferometers with unprecedented sensitivity, improved contrast, and hotter atom sources.https://doi.org/10.1088/1367-2630/aceb15atom interferometryquantum optimal controlBragg diffraction |
| spellingShingle | Garrett Louie Zilin Chen Tejas Deshpande Timothy Kovachy Robust atom optics for Bragg atom interferometry New Journal of Physics atom interferometry quantum optimal control Bragg diffraction |
| title | Robust atom optics for Bragg atom interferometry |
| title_full | Robust atom optics for Bragg atom interferometry |
| title_fullStr | Robust atom optics for Bragg atom interferometry |
| title_full_unstemmed | Robust atom optics for Bragg atom interferometry |
| title_short | Robust atom optics for Bragg atom interferometry |
| title_sort | robust atom optics for bragg atom interferometry |
| topic | atom interferometry quantum optimal control Bragg diffraction |
| url | https://doi.org/10.1088/1367-2630/aceb15 |
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