Volume 134, Number 3, May 2021
|Number of page(s)||7|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||14 July 2021|
Motional quantum metrology in a Penning trap
1 Área de Física Aplicada, Universidad Politécnica de Cartagena - 30202 Cartagena, Spain
2 Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada - 18071 Granada, Spain
3 Centro de Investigación en Tecnologías de la Información y las Comunicaciones, Universidad de Granada 18071 Granada, Spain
Received: 2 June 2021
Accepted: 8 June 2021
We propose to measure the six motional frequencies of an unbalanced two-ion crystal in a Penning trap using a scheme that has been demonstrated in a quantum-metrology experiment with a single ion in a linear Paul trap. To study the feasibility, we derive the quantum Hamiltonian for the unbalanced crystal formed by a target and a sensor ion (40Ca, and deduce characteristic coordinates , and , associated to the amplitudes of the displacement operator , and , respectively, when a dipolar time-varying field is applied. The final state after excitation is read out using rapid adiabatic passage. We also present the status of the 7 tesla open-ring Penning trap where first experiments on the 232ThCa crystal, cooled to the ground state, are foreseen in the short-term future. Finally, we underline possible experiments with this unique platform.
© 2021 EPLA
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