Measurement of Rb g-series quantum defect using two-photon microwave spectroscopy
| Autor: | Kaitlin Moore, Georg Raithel, Ryan Cardman, A. Duspayev |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Quantum Physics Atomic Physics (physics.atom-ph) FOS: Physical sciences Context (language use) 01 natural sciences 3. Good health 010305 fluids & plasmas Physics - Atomic Physics Quantum defect symbols.namesake Electric field 0103 physical sciences Rydberg atom symbols Rotational spectroscopy Physics - Atomic and Molecular Clusters Atomic physics van der Waals force 010306 general physics Atomic and Molecular Clusters (physics.atm-clus) Quantum Physics (quant-ph) Microwave Excitation |
| DOI: | 10.48550/arxiv.2004.11407 |
| Popis: | We utilize two-photon high-precision microwave spectroscopy of $ng\rightarrow(n+2)g$ transitions to precisely measure the high-angular-momentum $g$-series quantum defect of $^{85}$Rb. Samples of cold Rydberg atoms in the $ng$ state are prepared via a three-photon optical excitation combined with controlled electric-field mixing and probed with 40-$\mu$s-long microwave interaction pulses. The leading systematic uncertainty arises from DC Stark shifts, which is addressed by a cancellation of background electric fields in all three dimensions. From our measurements and an analysis of systematic uncertainties from DC and AC Stark shifts, van der Waals interactions, and microwave frequency calibration, we obtain $\delta_0=0.0039990(21)$ and $\delta_2=-0.0202(21)$. We discuss our results in context with recent work elsewhere, as well as applications towards precision measurement. Comment: 9 pages, 5 figures, 3 tables |
| Databáze: | OpenAIRE |
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