Role of Oxygen in Laser Induced Contamination at Diamond-Vacuum Interfaces
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866918029403619328 |
|---|---|
| author | Parthasarathy, Shreyas Joos, Maxime Hughes, Lillian B. Meynell, Simon A. Morrison, Taylor A. Risner-Jamtgaard, J. D. Weld, David M. Mukherjee, Kunal Jayich, Ania C. Bleszynski |
| author_facet | Parthasarathy, Shreyas Joos, Maxime Hughes, Lillian B. Meynell, Simon A. Morrison, Taylor A. Risner-Jamtgaard, J. D. Weld, David M. Mukherjee, Kunal Jayich, Ania C. Bleszynski |
| contents | Many modern-day quantum science experiments rely on high-fidelity measurement of fluorescent signals emitted by the quantum system under study. A pernicious issue encountered when such experiments are conducted near a material interface in vacuum is "laser-induced contamination" (LIC): the gradual accretion of fluorescent contaminants on the surface where a laser is focused. Fluorescence from these contaminants can entirely drown out any signal from e.g. optically-probed color centers in the solid-state. Crucially, while LIC appears often in this context, it has not been systematically studied. In this work, we probe the onset and growth rate of LIC for a diamond nitrogen-vacancy center experiment in vacuum, and we correlate the contamination-induced fluorescence intensities to micron-scale physical build-up of contaminant on the diamond surface. Drawing upon similar phenomena previously studied in the space optics community, we use photo-catalyzed oxidation of contaminants as a mitigation strategy. We vary the residual oxygen pressure over 9 orders of magnitude and find that LIC growth is inhibited at near-atmospheric oxygen partial pressures, but the growth rate at lower oxygen pressure is non-monotonic. Finally, we discuss a model for the observed dependence of LIC growth rate on oxygen content and propose methods to extend in situ mitigation of LIC to a wider range of operating pressures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_06942 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Role of Oxygen in Laser Induced Contamination at Diamond-Vacuum Interfaces Parthasarathy, Shreyas Joos, Maxime Hughes, Lillian B. Meynell, Simon A. Morrison, Taylor A. Risner-Jamtgaard, J. D. Weld, David M. Mukherjee, Kunal Jayich, Ania C. Bleszynski Quantum Physics Mesoscale and Nanoscale Physics Many modern-day quantum science experiments rely on high-fidelity measurement of fluorescent signals emitted by the quantum system under study. A pernicious issue encountered when such experiments are conducted near a material interface in vacuum is "laser-induced contamination" (LIC): the gradual accretion of fluorescent contaminants on the surface where a laser is focused. Fluorescence from these contaminants can entirely drown out any signal from e.g. optically-probed color centers in the solid-state. Crucially, while LIC appears often in this context, it has not been systematically studied. In this work, we probe the onset and growth rate of LIC for a diamond nitrogen-vacancy center experiment in vacuum, and we correlate the contamination-induced fluorescence intensities to micron-scale physical build-up of contaminant on the diamond surface. Drawing upon similar phenomena previously studied in the space optics community, we use photo-catalyzed oxidation of contaminants as a mitigation strategy. We vary the residual oxygen pressure over 9 orders of magnitude and find that LIC growth is inhibited at near-atmospheric oxygen partial pressures, but the growth rate at lower oxygen pressure is non-monotonic. Finally, we discuss a model for the observed dependence of LIC growth rate on oxygen content and propose methods to extend in situ mitigation of LIC to a wider range of operating pressures. |
| title | Role of Oxygen in Laser Induced Contamination at Diamond-Vacuum Interfaces |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2401.06942 |