Addressable Rydberg excitation in arrays of single neutral atoms with a strongly focused flat-top beam
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866917447189135360 |
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| author | Iukhnovets, I. V. Goloshchapov, M. Y. Gordeev, A. P. Bychkova, O. V. Bobrov, I. B. Struchalin, G. I. Straupe, S. S. |
| author_facet | Iukhnovets, I. V. Goloshchapov, M. Y. Gordeev, A. P. Bychkova, O. V. Bobrov, I. B. Struchalin, G. I. Straupe, S. S. |
| contents | We present a method for generating a laser beam with flat intensity and phase profiles in the focal region where the beam interacts with neutral $^{87}$Rb atoms in an array of optical dipole traps. We synthesize the beam as a superposition of Hermite--Gaussian or Laguerre--Gaussian modes. Then we give analytical expressions for the coefficients of such a superposition, an analysis of beam propagation along the $z$ axis in the vicinity of the waist, and several other related theoretical issues. Rydberg two-qubit dynamics driven by this flat-top profile are analyzed through numerical solutions of the Lindblad master equation using our in-house Julia package. Beam preparation is demonstrated on a neutral-atom experimental platform. Measurements reveal a difference in the visibility of Rabi oscillations for addressed atoms compared with neighboring ones, confirming the effective spatial selectivity provided by the flat-top beam profile. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2604_26580 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Addressable Rydberg excitation in arrays of single neutral atoms with a strongly focused flat-top beam Iukhnovets, I. V. Goloshchapov, M. Y. Gordeev, A. P. Bychkova, O. V. Bobrov, I. B. Struchalin, G. I. Straupe, S. S. Quantum Physics Atomic Physics We present a method for generating a laser beam with flat intensity and phase profiles in the focal region where the beam interacts with neutral $^{87}$Rb atoms in an array of optical dipole traps. We synthesize the beam as a superposition of Hermite--Gaussian or Laguerre--Gaussian modes. Then we give analytical expressions for the coefficients of such a superposition, an analysis of beam propagation along the $z$ axis in the vicinity of the waist, and several other related theoretical issues. Rydberg two-qubit dynamics driven by this flat-top profile are analyzed through numerical solutions of the Lindblad master equation using our in-house Julia package. Beam preparation is demonstrated on a neutral-atom experimental platform. Measurements reveal a difference in the visibility of Rabi oscillations for addressed atoms compared with neighboring ones, confirming the effective spatial selectivity provided by the flat-top beam profile. |
| title | Addressable Rydberg excitation in arrays of single neutral atoms with a strongly focused flat-top beam |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2604.26580 |