T. P. McKenna*, J. D. Witmer*, R. N. Patel, W. Jiang, R. Van Laer, P. Arrangoiz-Arriola, E. A. Wollack, J. F. Herrmann, and A. H. Safavi-Naeini, “Cryogenic microwave-to-optical conversion using a triply resonant lithium-niobate-on-sapphire transducer,” Optica, vol. 7, no. 12, p. 1737, Dec. 2020, https://doi.org/10.1364/OPTICA.397235.
*equally contributed