Physical Review A - December 2023

Physical Review A covering atomic, molecular, and optical physics and quantum information View Email Online   Volume 108, Issue 5 November 2023   View Issue   Advertisement Upcoming Physical Review Journal Club session December 4 | 9:00 a.m. ET Reza Rouzegar and Alexander Chekhov (Freie Universität Berlin) on the Physical Review Applied paper: "Broadband Spintronic Terahertz Source with Peak Electric Fields Exceeding 1.5 MV/cm" Registration is free and a video recording will be provided to all registrants.     Advertisement Build your on-campus physics community with help from a Women in Physics Group Grant The APS Committee on the Status of Women in Physics (CSWP) is now accepting proposals from undergraduate and graduate students who are interested in creating new WiP groups or enhancing existing ones. The deadline for proposals is January 26, 2024. Learn more.     Not an APS member? Join today to start connecting with a community of more than 50,000 physicists.   Highlights Editors' Suggestion Optimal qubit circuits for quantum-enhanced telescopes Robert Czupryniak, John Steinmetz, Paul G. Kwiat, and Andrew N. Jordan Phys. Rev. A 108, 052408 (2023) – Published 8 November 2023 The authors propose two optimal phase-estimation schemes that can be used for quantum-enhanced long-baseline interferometry where distributed entanglement eliminates the loss of stellar photons during transmission over the baselines. The schemes can lead to a reduction of both the number of ancilla qubits and the number of gate operations by a factor of two.     Editors' Suggestion Experimental analysis of image resolution of quantum imaging with undetected light through position correlations Marta Gilaberte Basset, René Sondenheimer, Jorge Fuenzalida, Andres Vega, Sebastian Töpfer, Elkin A. Santos, Sina Saravi, Frank Setzpfandt, Fabian Steinlechner, and Markus Gräfe Phys. Rev. A 108, 052610 (2023) – Published 20 November 2023 The authors explore the resolution dependency of imaging with undetected light, specifically the connection between spatial resolution and the strength of position correlations of SPDC-generated photons. Their results show a discrepancy from theoretical models, so they introduce an extended model that better takes image resolution into account.     Editors' Suggestion Deuterium spectroscopy for enhanced bounds on physics beyond the standard model Robert M. Potvliege, Adair Nicolson, Matthew P. A. Jones, and Michael Spannowsky Phys. Rev. A 108, 052825 (2023) – Published 29 November 2023 The authors discuss the use of precise spectroscopic data on hydrogenic atoms in order to obtain new, more stringent bounds on new physics beyond the Standard Model. Assuming a certain "reasonable" flavor dependence the authors obtain constraints that are orders of magnitude more stringent than constraints from hydrogen alone.     Featured in Physics Imaging electron angular distributions to assess a full-power petawatt-class laser focus Smrithan Ravichandran, Marine Huault, Roberto Lera, Calvin Z. He, Andrew Longman, Robert Fedosejevs, Luis Roso, and Wendell T. Hill, III Phys. Rev. A 108, 053101 (2023) – Published 1 November 2023 Synopsis:Measuring the Intensity of the World's Most Powerful Lasers Electrons can help infer laser intensities that are too high to measure using conventional methods.     Editors' Suggestion Chiral currents in Bose-Einstein condensates subject to current-density interactions Maria Arazo, Montserrat Guilleumas, Ricardo Mayol, Vicente Delgado, and Antonio Muñoz Mateo Phys. Rev. A 108, 053302 (2023) – Published 1 November 2023 The authors study a quasi-one-dimensional Bose-Einstein condensate in a rotating ring geometry subject to a current nonlinearity. The stability of stationary states is examined both by linear excitation analysis and time evolution of the Gross-Pitaevskii equation with current-density interactions.     Editors' Suggestion Ultracold molecular collisions in magnetic fields: Efficient incorporation of hyperfine structure in the total rotational angular momentum representation Timur V. Tscherbul and Jose P. D'Incao Phys. Rev. A 108, 053317 (2023) – Published 17 November 2023 The authors explore an alternative basis set for incorporating the effects of hyperfine structure and external magnetic fields in quantum scattering calculations on ultracold molecular collisions. The basis set combines the computational efficiency of the total-angular-momentum basis with the ease of evaluating matrix elements pertinent to the fully uncoupled basis.     Featured in Physics Editors' Suggestion Letter Contribution of negative-energy states to the E2−M1 polarizability of optical clocks Fang-Fei Wu, Ting-Yun Shi, Wei-Tou Ni, and Li-Yan Tang Phys. Rev. A 108, L051101 (2023) – Published 9 November 2023 Synopsis:Solution for Atomic Clock Puzzle The authors theoretically investigate the impact of Dirac negative-energy states on the E2 and M1 polarizabilities in optical clocks. They demonstrate the importance of negative-energy states for the M1 polarizability and resolve the sign inconsistency between the theoretical calculations and experimental measurements in the E2-M1 polarizability difference of the Sr clock.     Featured in Physics Editors' Suggestion Letter Contribution of negative-energy states to multipolar polarizabilities of the Sr optical lattice clock S. G. Porsev, M. G. Kozlov, and M. S. Safronova Phys. Rev. A 108, L051102 (2023) – Published 9 November 2023 Synopsis:Solution for Atomic Clock Puzzle An accurate formula for the magnetic-dipole polarizability that takes into account both the positive- and negative-energy-state contributions is presented. The major discrepancy between the theory and experiment is explained.       American Physical Society: 1 Physics Ellipse, College Park, MD 20740 ©2023 American Physical Society | All rights reserved   You are receiving this email because you are subscribed to Table of Content alerts. If you no longer wish to receive these emails, please update your preferences.