Atomic Physics Papers of the Week

We theoretically describe and experimentally observe the reversibility of a nonequilibrium state in a unitary Fermi gas confined in a time-dependent trap.

We show that an exact controlled-$Z$ gate driven by a single global laser has an irreducible Rydberg-exposure cost in the perfect-blockade regime.

Building on these results, here we propose a scheme for magnetic-field-gradient detection by establishing a quantitative relationship between the condensate's rotational deflection angle and the magnetic-field gradient. In this work, we present the parameter dependence of this scheme and perform a systematic optimization.

We show that microwave shielding, which enables collisionally stable ultracold polar molecules, also leads to genuine nonadditive three-body interactions comparable to the shielding interaction itself.

We present a characterization of the sensitivity of broadband electric field measurements in the Very High Frequency (VHF) and Ultra High Frequency (UHF) bands using AC stark shifting of Rydberg states.

In this work, we report the extreme-ultraviolet (XUV) emission observed in an HHG experiment arising from a longer temporal process associated with dark states populated through frustrated tunneling ionization.

Using the heavy-particle QED approach, we derive the last missing $\alpha\,(Z\alpha)^5\,m^2/M$ nuclear recoil correction in muonic atoms, which originates from the combination of the $(Z\alpha)^5\,m^2/M$ recoil with the electron vacuum polarization.

Here we use a 2x1 MMF fused coupler to obtain two independent control paths sharing a common distal facet.

We present a comprehensive study of three-photon electromagnetically induced transparency (EIT) and absorption (EIA) in room-temperature Rb vapor.

We develop a minimal quantum scattering model that treats collisions as a coherent process occurring in the presence of the modulated trap.

To reduce the size of the configuration-interaction space, we develop coherent heat-bath configuration interaction in a configuration-state-function basis and combine it with many-body perturbation theory.

Here we show that photonic valleys can be selectively addressed in quantum optics using a simple two-level emitter, provided it is coupled nonlocally to the field, thereby realizing a so-called giant atom.

In the present work a method for calculating atomic static electric rank-$n$ tensor quadrupole polarizabilities $\alpha_Q^{(n)}(J)$ for arbitrary atomic electronic structure is presented.

We demonstrate a spectrotemporal imaging technique that maps ultrafast electron dynamics onto energy- and angle-resolved photoelectron distributions in a single measurement.

We investigate the effects of a stationary two-dimensional periodic optical lattice on a rotating Bose--Einstein condensate confined by an isotropic harmonic trap.

The present manuscript describes how the polarization functions of JM and ARB can be reduced to compact analytical formulas.

We use a zooming-and-sigma-annealing scheme with floating-point encoding within the Quantum Annealer Eigensolver (QAE) algorithm, which yields ground-state eigenvectors accurate to the chosen three decimal places.

Modern experiments in optical tweezers and optical lattices have demonstrated controlled interactions between molecules in coherent quantum states, and recently bulk gases of molecules have been cooled to quantum degeneracy. Motivated by these landmark advances, we present this article to explain many of the key concepts relevant to current research in the field.

The last significant unknown contribution to the two-loop Lamb shift, namely the electron self-energy with vacuum-polarization insertion into the photon line, is determined including higher-order effects in the parameter $\alpha Z$, with $\alpha$ being the fine-structure constant and $Z$ the nuclear charge number.