Coherence properties of highly-excited motional states of a trapped ion

• URL: http://arxiv.org/abs/2007.04149v2
• Date: Mon, 21 Sep 2020 12:54:59 GMT
• Title: Coherence properties of highly-excited motional states of a trapped ion
• Authors: Vincent Jarlaud, Pavel Hrmo, Manoj K. Joshi and Richard C. Thompson
• Abstract summary: Coherent properties of motional states of a single ion confined in a Penning ion trap are studied. We introduce a technique for preparing the ion in an incoherent superposition of highly-excited motional states.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a study of the coherence properties of a variety of motional states of a single ion confined in a Penning ion trap. We demonstrate that the motion of the ion has a coherence time of the order of one second, using Ramsey interferometry. We introduce a technique for preparing the ion in an incoherent superposition of highly-excited motional states using a simple modification of optical sideband cooling. Coherent manipulation of these states allow measurements of optical and motional coherence to be carried out. We show that these highly-excited motional state superpositions have long coherence times despite the incoherent preparation of the states. Such states can be useful for sensitive motional dephasing measurements.

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