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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2511.05370 |
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| _version_ | 1866909036977324032 |
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| author | Li, Luozhen Karyath, Akshay Babu Bertrand, Julien Askarani, Mohsen Falamarzi Gieysztor, Maria Sasidharan, Hridya Meppully Slater, Joshua A. Marsh, Aaron D. Woodburn, Philip J. T. Thiel, Charles W. Cone, Rufus L. Marzban, Sara Alfasi, Nir Remy, Patrick Tittel, Wolfgang |
| author_facet | Li, Luozhen Karyath, Akshay Babu Bertrand, Julien Askarani, Mohsen Falamarzi Gieysztor, Maria Sasidharan, Hridya Meppully Slater, Joshua A. Marsh, Aaron D. Woodburn, Philip J. T. Thiel, Charles W. Cone, Rufus L. Marzban, Sara Alfasi, Nir Remy, Patrick Tittel, Wolfgang |
| contents | We characterize spectroscopic and coherence properties of the 1451.37 nm excited-state zero-phonon line (ZPL) between the $^{3}F_{4}$ and the $^{3}H_{4}$ manifolds of a thulium-doped yttrium aluminum perovskite (Tm$^{3+}$:YAlO$_3$) crystal at temperatures around 1.5 K. We measure the absorption spectrum between the $^{3}H_{6}$ - $^{3}F_{4}$ and $^{3}F_{4}$ - $^{3}H_{4}$ manifolds, the inhomogeneous broadening of the $^{3}F_{4}$ - $^{3}H_{4}$ (excited-state) ZPL, and the lifetimes of the higher-lying and lower-lying excited states. We also investigate level shifts caused by the quadratic Zeeman interaction as well as spectral hole-burning spectra with varying magnetic fields, providing insights into hyperfine interactions. Using again spectral holes but also optical free induction decays (FIDs), we assess optical coherence times, finding a maximum of $4.75 \pm 0.07~μs$ at B=2T and low ion concentration in the $^{3}F_{4}$ level. Our results -- the first to demonstrate coherence of an excited-state transition in a rare-earth crystal -- suggest the possibility of exploiting such transitions for quantum technology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_05370 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spectroscopy and Coherence of an Excited-State Transition in Tm$^{3+}$:YAlO$_3$ at Telecommunication Wavelength Li, Luozhen Karyath, Akshay Babu Bertrand, Julien Askarani, Mohsen Falamarzi Gieysztor, Maria Sasidharan, Hridya Meppully Slater, Joshua A. Marsh, Aaron D. Woodburn, Philip J. T. Thiel, Charles W. Cone, Rufus L. Marzban, Sara Alfasi, Nir Remy, Patrick Tittel, Wolfgang Quantum Physics We characterize spectroscopic and coherence properties of the 1451.37 nm excited-state zero-phonon line (ZPL) between the $^{3}F_{4}$ and the $^{3}H_{4}$ manifolds of a thulium-doped yttrium aluminum perovskite (Tm$^{3+}$:YAlO$_3$) crystal at temperatures around 1.5 K. We measure the absorption spectrum between the $^{3}H_{6}$ - $^{3}F_{4}$ and $^{3}F_{4}$ - $^{3}H_{4}$ manifolds, the inhomogeneous broadening of the $^{3}F_{4}$ - $^{3}H_{4}$ (excited-state) ZPL, and the lifetimes of the higher-lying and lower-lying excited states. We also investigate level shifts caused by the quadratic Zeeman interaction as well as spectral hole-burning spectra with varying magnetic fields, providing insights into hyperfine interactions. Using again spectral holes but also optical free induction decays (FIDs), we assess optical coherence times, finding a maximum of $4.75 \pm 0.07~μs$ at B=2T and low ion concentration in the $^{3}F_{4}$ level. Our results -- the first to demonstrate coherence of an excited-state transition in a rare-earth crystal -- suggest the possibility of exploiting such transitions for quantum technology. |
| title | Spectroscopy and Coherence of an Excited-State Transition in Tm$^{3+}$:YAlO$_3$ at Telecommunication Wavelength |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2511.05370 |