Quantum interference shifts in laser spectroscopy with elliptical polarization

Pedro Amaro, Filippo Fratini, Laleh Safari, Aldo Antognini, Paul Indelicato, Randolf Pohl, and José Paulo Santos

Phys. Rev. A 92, 062506 – Published 31 December 2015

Abstract

We investigate the quantum interference shifts between energetically close states, where the state structure is observed by laser spectroscopy. We report a compact and analytical expression that models the quantum interference induced shift for any admixture of circular polarization of the incident laser and angle of observation. An experimental scenario free of quantum interference can thus be predicted with this formula. Although this study is exemplified here for muonic deuterium, it can be applied to any other laser spectroscopy measurement of $n s - n^{'} p$ frequencies of a nonrelativistic atomic system, via an $n s \to n^{'} p \to n^{''} s$ scheme.

Received 5 November 2015

DOI:https://doi.org/10.1103/PhysRevA.92.062506

Authors & Affiliations

Pedro Amaro^1,*, Filippo Fratini², Laleh Safari³, Aldo Antognini^4,5, Paul Indelicato⁶, Randolf Pohl⁷, and José Paulo Santos¹

¹Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL), Departamento de Física, Faculdade de Cêincias e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
²Atominstitut, TU Wien, 1020 Vienna, Austria
³IST Austria, Am Campus 1, A-3400 Klosterneuburg, Austria
⁴Institute for Particle Physics, ETH Zurich, 8093 Zurich, Switzerland
⁵Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland
⁶Laboratoire Kastler Brossel, Sorbonne Université, Université Pierre et Marie Curie–Paris 06, École Normale Supérieure, Collège de France, CNRS, Case 74, 4 place Jussieu, F-75005 Paris, France
⁷Max Planck Institute of Quantum Optics, 85748 Garching, Germany

^*pdamaro@fct.unl.pt

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Vol. 92, Iss. 6 — December 2015

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