Speaker: Mikolaj Schmidt
Affiliation: Macquarie University, NSW


Quantum acoustics explores the nonclassical dynamics of vibrating mechanical systems [1], and It constitutes an exciting platform for implementing the new paradigm of hybrid quantum systems. However, at the moment quantum acoustics lacks a central component that enabled the success of the optical or electronic platforms – a source of a quantum nonlinearity, or an acoustic “quantum emitter”.

In this talk I will review the basics of quantum acoustics, and show some early implementations of all-acoustics quantum systems which identify and harness acoustic emission [2]. I will then show how to efficiently couple such an emission to the newly developed acoustic cavities [3,4], and hint at the ongoing work focused on interfacing this all-acoustic platform with optical control systems [5].


[1] M. Aspelmeyer, et al., “Cavity optomechanics,” Rev. Mod. Phys. 86, 1391 (2014).
[2] D. Lee, et al., “Topical review: spins and mechanics in diamond,” J. Opt. 19, 033001 (2017).
[3] M.K. Schmidt, et al., “Elastic Purcell effect,” Phys. Rev. Lett. 121, 064301 (2018).
[4] M.K. Schmidt, et al., “Acoustic diamond resonators with ultra-small mode volumes,” Phys. Rev. Research 2, 033153 (2021).
[5] M. K. Schmidt, et al., “Quantum engineering effective photoelasticity in diamond phoxonic nanocavities, ” in preparation (2021).

About Physics Seminars

The weekly Physics Seminar series focuses on a broad range of physics research within SMP, along with frequent presentations from visiting researchers. Seminars are usually scheduled for 1.00pm on Tuesdays.

The talks are typically more specialised than a colloquium but are often attended by staff and PhD students across a broad range of areas. Speakers are thus encouraged to include introductory material in the talks.

All SMP researchers and HDR students are encouraged to speak. Please email Lewis Williamson to register your interest.

The seminars are open so there is no need to register your attendance.


06 (Physics Annexe)