Formation of two-ion crystals by injection from a Paul-trap source into a high-magnetic-field Penning trap

authored by

J. Berrocal, E. Altozano, F. Domínguez, M. J. Gutiérrez, J. Cerrillo, F. J. Fernández, M. Block, C. Ospelkaus, D. Rodríguez

Abstract

Two-ion crystals constitute a platform for investigations of quantum nature that can be extended to any ion species or charged particle provided one of the ions in the crystal can be directly laser cooled and manipulated with laser radiation. This paper presents the formation of two-ion crystals for quantum metrology in a 7-tesla open-ring Penning trap. Ca+40 ions are produced either internally by photoionization or externally in a (Paul-trap) source, transported through the strong magnetic field gradient of the superconducting solenoid, and captured in-flight with a mean kinetic energy of a few electronvolts with respect to the minimum of the Penning-trap potential well. Laser cooling of the two-ion crystal in a strong magnetic field towards reaching the quantum regime is also presented, with particular emphasis on the cooling of the radial modes.

Organisation(s)

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

External Organisation(s)

University of Granada
GSI Helmholtz Centre for Heavy Ion Research
Universidad Politecnica de Cartagena
Johannes Gutenberg University Mainz
Helmholtz-Institut Mainz
National Metrology Institute of Germany (PTB)

Type

Article

Journal

Physical Review A

Volume

105

No. of pages

11

ISSN

2469-9926

Publication date

05.2022

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.2203.16933 (Access: Open)
https://doi.org/10.1103/PhysRevA.105.052603 (Access: Closed)