# Resources

## Publications

• ### Ground-State $g$ Factor of Highly Charged $^{229}\mathrm{Th}$ Ions: An Access to the M1 Transition Probability between the Isomeric and Ground Nuclear...

Author(s): V. M. Shabaev, D. A. Glazov, A. M. Ryzhkov, C. Brandau, G. Plunien, W. Quint, A. M. Volchkova, and D. V. Zinenko A method is proposed to determine the $M1$ nuclear transition amplitude and hence the lifetime of the “nuclear clock transition” between the low-lying ($∼8\text{ }\text{ }\mathrm{eV}$) first isomeric state and the ground state of $^{229}\mathrm{Th}$ from a measurement of the ground-state $g$ factor ... [Phys. Rev. Lett...
• ### Experimental Control of Quantum-Mechanical Entanglement in an Attosecond Pump-Probe Experiment

Author(s): Lisa-Marie Koll, Laura Maikowski, Lorenz Drescher, Tobias Witting, and Marc J. J. Vrakking Entanglement is one of the most intriguing aspects of quantum mechanics and lies at the heart of the ongoing second quantum revolution, where it is a resource that is used in quantum key distribution, quantum computing, and quantum teleportation. We report experiments demonstrating the crucial role ... [Phys. Rev. Lett. 128, 043201] Published...
• ### Ab Initio Prediction of a Negative Barkas Coefficient for Slow Protons and Antiprotons in LiF

Author(s): Xixi Qi, Fabien Bruneval, and Ivan Maliyov We report the ab initio prediction of a negative Barkas coefficient in lithium fluoride (LiF) insulator at low velocity ($v<0.25\text{ }\text{ }\mathrm{a}.\mathrm{u}.$, ${E}_{\mathrm{kin}}∼2\text{ }\text{ }\mathrm{keV}$). The electronic stopping power of protons in LiF has been extensively studie... [Phys. Rev. Lett. 128, 043401] Published Mon Jan 24, 2022
• ### Exact Solutions of Interacting Dissipative Systems via Weak Symmetries

Author(s): A. McDonald and A. A. Clerk We demonstrate how the presence of continuous weak symmetry can be used to analytically diagonalize the Liouvillian of a class of Markovian dissipative systems with strong interactions or nonlinearity. This enables an exact description of the full dynamics and dissipative spectrum. Our method can be... [Phys. Rev. Lett. 128, 033602] Published Fri Jan 21, 2022
• ### Trapping Alkaline Earth Rydberg Atoms Optical Tweezer Arrays

Author(s): J. T. Wilson, S. Saskin, Y. Meng, S. Ma, R. Dilip, A. P. Burgers, and J. D. Thompson Neutral atom qubits with Rydberg-mediated interactions are a leading platform for developing large-scale coherent quantum systems. In the majority of experiments to date, the Rydberg states are not trapped by the same potential that confines ground state atoms, resulting in atom loss and constraints... [Phys. Rev. Lett. 128, 033201] Published Thu...
• ### Radium Ion Optical Clock

Author(s): C. A. Holliman, M. Fan, A. Contractor, S. M. Brewer, and A. M. Jayich We report the first operation of a ${\mathrm{Ra}}^{+}$ optical clock, a promising high-performance clock candidate. The clock uses a single trapped $^{226}{\mathrm{Ra}}^{+}$ ion and operates on the $7s\text{ }^{2}{S}_{1/2}→6d\text{ }^{2}{D}_{5/2}$ electric quadrupole transition. By self-referencing ... [Phys. Rev. Lett. 128, 033202] Published Thu Jan 20, 2022
• ### SU(2)-in-SU(1,1) Nested Interferometer for High Sensitivity, Loss-Tolerant Quantum Metrology

Author(s): Wei Du, Jia Kong, Guzhi Bao, Peiyu Yang, Jun Jia, Sheng Ming, Chun-Hua Yuan, J. F. Chen, Z. Y. Ou, Morgan W. Mitchell, and Weiping Zhang We present experimental and theoretical results on a new interferometer topology that nests a SU(2) interferometer, e.g., a Mach-Zehnder or Michelson interferometer, inside a SU(1,1) interferometer, i.e., a Mach-Zehnder interferometer with parametric amplifiers in place of beam splitters. This SU(2...