Article
Physics, Multidisciplinary
Y. Mei, Y. Li, H. Nguyen, P. R. Berman, A. Kuzmich
Summary: Researchers have created a special two-level system in an ensemble of several hundred atoms and observed oscillations between the ground state and collective Rydberg state. They have also obtained the light shifts of the qubits using interference techniques and derived an effective two-level model that agrees well with their observations.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
R. Cardman, J. L. MacLennan, S. E. Anderson, Y-J Chen, G. Raithel
Summary: The study introduces a formalism for the photoionization and potential energy curves of Rydberg atoms in ponderomotive optical lattices, demonstrating the impact of lattice-induced photoionization on Rydberg atom lifetimes across different optical lattice depths. The behaviour of photoionization is largely governed by the rapid decrease of photoionization cross sections with increasing angular momentum, lattice-induced angular momentum mixing, and interference between photoionization transition amplitudes in lattice-mixed and free-electron states. In deep optical lattices, angular momentum mixing leads to a complex potential energy curve structure, while in shallower lattices, atoms on low angular momentum curves remain relatively unaffected by mixing and maintain high photoionization rates. Data on photoionization in different lattice depths have potential applications in optical control and high-precision spectroscopy of Rydberg atoms.
NEW JOURNAL OF PHYSICS
(2021)
Article
Optics
Shun Liang, Qingsong Yu, Xing Lei, Shaohuan Ning, Changbiao Li, Yanpeng Zhang, Zhaoyang Zhang
Summary: This experiment successfully demonstrated the formation of a one-dimensional electromagnetically induced optical lattice in Rydberg atomic vapors and verified the spatially modulated susceptibility of the lattice. This research not only opens the door for exploring Rydberg-atom physics and related applications based on strong interaction in photonic lattices, but also provides a convenient periodic environment for controlling beam dynamics with Rydberg atoms.
Article
Optics
Vitaly D. Ovsiannikov, Vitaly G. Palchikov, Igor L. Glukhov
Summary: The high-precision determination of microwave radiation parameters can be achieved by measuring the spectral characteristics of radiation transitions between the Rydberg states of atoms. In this study, frequencies and matrix elements of dipole transitions between different Rydberg states of alkali-metal atoms were calculated using numerical computations. The calculated data were approximated to accurately evaluate the frequencies and matrix elements of microwave transitions.
Article
Optics
Jiandong Bai, Xin Wang, Xiaokai Hou, Wenyuan Liu, Junmin Wang
Summary: The magic conditions of the Rydberg transition in cesium atoms were studied by calculating the dynamic polarizabilities, determining the magic angle and detuning. The magic optical dipole trap can confine ground-state and Rydberg-state atoms, achieving cancellation of differential light shift.
Article
Optics
Alaa Abo Zalam, M. Bruvelis, K. Miculis, I. I. Beterov, N. N. Bezuglov, A. Ekers, F. Fuso
Summary: Studies have shown that specific quantum number combinations in Penning ionisation processes between alkali-metal atoms in certain excited states can significantly increase ionisation rates, making it crucial for the production of cold plasma.
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Jinpin Wu, Xixiang Pan, Lu Wen, Li Luo, Qiang Zhou
Summary: The research focused on the design of a low-cost rare-earth free Mg2B2O5:Cr3+ near-infrared phosphor, investigating the effect of Cr3+ concentration on luminescence and utilizing charge compensation to enhance photoluminescence. It also explored the impact of polyhedron distortion on thermal stability and discussed the relationship between charge compensation and luminescence lifetime. The findings provide valuable insights for the development of cost-effective near-infrared phosphors and improvement of photoluminescence intensity.
MATERIALS TODAY COMMUNICATIONS
(2022)