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arXiv · 2302.03553

Single-shot measurements of phonon number states using the Autler-Townes effect

Marion Mallweger·Murilo Henrique de Oliveira·Robin Thomm·Harry Parke·Natalia Kuk·Gerard Higgins·Romain Bachelard·Celso Jorge Villas-Boas·Markus Hennrich
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Abstract

We present a single-shot method to measure motional states in the number basis. The technique can be applied to systems with at least three non-degenerate energy levels which can be coupled to a linear quantum harmonic oscillator, such as in trapped ion experiments. The method relies on probing an Autler-Townes splitting that arises when two levels are strongly coupled via a phonon-number changing transition. We demonstrate the method using a single trapped ion and show that it may be used in a non-demolition fashion to prepare phonon number states. We also show how the Autler-Townes splitting can be used to measure phonon number distributions.

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Marion Mallweger, Murilo Henrique de Oliveira, Robin Thomm, Harry Parke, Natalia Kuk, Gerard Higgins, Romain Bachelard, Celso Jorge Villas-Boas, Markus Hennrich. 2023-02-07. Single-shot measurements of phonon number states using the Autler-Townes effect. https://doi.org/10.1103/physrevlett.131.223603

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