Microwave-optical coupling via Rydberg excitons in cuprous oxide [dataset]

Walther, Valentin (Harvard University); Lynch, Stephen (Cardiff University); Grunwald, Peter (Aarhus University); Hodges, Chris (Cardiff University); Gallagher, Liam (Durham University); Jones, Matthew (Durham University); Langbein, Wolfgang (Cardiff University); Pizzey, Danielle (Durham University); Pritchett, Jon (Durham University); Rogers, Joshua (Durham University); Adams, Charles (Durham University)

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Microwave-optical coupling via Rydberg excitons in cuprous oxide [dataset] Open Access

We report exciton-mediated coupling between microwave and optical fields in cuprous oxide (Cu2O) at low temperatures. Rydberg excitonic states with principal quantum number up to n= 12 were observed at 4 K using both one-photon (absorption) and two-photon (second harmonic generation) spectroscopy. Near resonance with an excitonic state, the addition of a microwave field significantly changed the absorption lineshape, and added sidebands at the microwave frequency to the coherent second harmonic. Both effects showed a complex dependence on n and angular momentum, l. All of these features are in semi-quantitative agreement with a model based on intra-band electric dipole transitions between Rydberg exciton states. With a simple microwave antenna we already reach a regime where the microwave coupling (Rabi frequency) is comparable to the nonradiatively broadened linewidth of the Rydberg excitons. The results provide a new way to manipulate excitonic states, and open up the possibility of a cryogenic microwave to optical transducer based on Rydberg excitons.

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Resource type: Dataset
Contributors: Creator: Gallagher, Liam ¹
Data collector: Gallagher, Liam ¹
Data curator: Gallagher, Liam ¹
Contact person: Jones, Matthew ¹
Adams, Charles ¹
Rogers, Joshua ¹
Pizzey, Danielle ¹
Pritchett, Jon ¹
Langbein, Wolfgang ²
Lynch, Stephen ²
Hodges, Chris ²
Grunwald, Peter ³
Walther, Valentin ⁴

¹ Durham University
² Cardiff University
³ Aarhus University
⁴ Harvard University
Funder: Engineering and Physical Sciences Research Council
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Keyword: Rydberg excitons
Microwave-optical coupling
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Identifier: ark:/32150/r13x816m66s
doi:10.15128/r13x816m66s
Rights: Creative Commons Attribution 4.0 International (CC BY)
Publisher: Durham University
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Depositor: L.A.P. Gallagher
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