Photon-recoil spectroscopy: Systematic shifts and nonclassical enhancements

authored by

Marius Schulte, Niels Lörch, Piet Oliver Schmidt, Klemens Johannes Hammerer

Abstract

In photon-recoil spectroscopy, signals are extracted from recoils imparted by the spectroscopy light on the motion of trapped ions as demonstrated by Hempel et al. [C. Hempel, Nat. Photon. 7, 630 (2013)1749-488510.1038/nphoton.2013.172] and Wan et al. [Y. Wan, Nat. Commun. 5, 3096 (2014)2041-172310.1038/ncomms4096]. The method exploits the exquisite efficiency in the detection of phonons achievable in ion crystals and is thus particularly suitable for species with broad noncycling transitions where detection of fluorescence photons is impractical. Here we develop a theoretical model for the description of photon-recoil spectroscopy based on a Fokker-Planck equation for the Wigner function of the phonon mode. Our model correctly explains systematic shifts due to Doppler heating and cooling as observed in the experiment. Furthermore, we investigate quantum metrological schemes for enhancing the spectroscopic sensitivity based on the preparation and detection of nonclassical states of the phonon mode.

Organisation(s)

Institute of Theoretical Physics
Institute of Quantum Optics
CRC 1227 Designed Quantum States of Matter (DQ-mat)

External Organisation(s)

University of Basel
National Metrology Institute of Germany (PTB)

Type

Article

Journal

Physical Review A

Volume

98

ISSN

2469-9926

Publication date

12.2018

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Electronic version(s)

https://doi.org/10.48550/arXiv.1807.08309 (Access: Open)
https://doi.org/10.1103/PhysRevA.98.063808 (Access: Closed)