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GaAs/AlAs Acoustic Nanocavities for Coherent GHz-THz Phonon Engineering
S. Sandeep, E. R. Cardozo de Oliveira, E. Mehdi +1
The controlled confinement of high-frequency acoustic phonons in semiconductor nanostructures has emerged as a key ingredient for functional nanophononic and hybrid quantum technol…
Open Nanoacoustic Resonators Based on SrTiO/YBaCuO Superlattices
S. Sandeep, O. Colmegna, S. Carreira +4
We report the design and experimental demonstration of an open nanophononic cavity based on a hybrid oxide superlattice composed of SrTiO (STO) and YBaCuO (YBCO…
High-Performance Nanophononic Resonators in Self-Suspended WSe Domes and Drums
Jens-Christian Drawer, Bo Han, Edson Rafael Cardozo de Oliveira +7
Van der Waals materials are ideally suited for the implementation of high-frequency nanophononic resonators with atomically flat interfaces. Here, we present two versatile van der…
Coupled Topological Interface States and Phonon Molecules in GaAs/AlAs Superlattices
S. Sandeep, O. Colmegna, C. Xiang +5
Topological interface states in one-dimensional superlattices provide spatially localized phonon modes protected by the topology of the underlying band structure. In GaAs/AlAs dist…
Towards Environmentally Responsive Hypersound Materials
Edson Rafael Cardozo de Oliveira, Gastón Grosman, Chushuang Xiang +6
The engineering of acoustic phonons in the gigahertz (GHz) range holds significant potential for technological breakthroughs in areas such as data processing, sensing and quantum c…
Design of Cost-Effective Nanoacoustic Devices based on Mesoporous Thin Films
Edson R. Cardozo de Oliveira, Priscila Vensaus, Galo J. A. A. Soler-Illia +1
Gigahertz acoustic resonators have the potential to advance data processing and quantum communication. However, they are expensive and lack responsiveness to external stimuli, limi…
Topological Nanophononic Interface States Using High-Order Bandgaps in the One-Dimensional Su-Schrieffer-Heeger Model
Anne Rodriguez, Konstantinos Papatryfonos, Edson Rafael Cardozo de Oliveira +1
Topological interface states in periodic lattices have emerged as valuable assets in the fields of electronics, photonics, and phononics, owing to their inherent robustness against…
Perspectives on high-frequency nanomechanics, nanoacoustics, and nanophononics
Priya, Edson R. Cardozo de Oliveira, Norberto D. Lanzillotti-Kimura
Nanomechanics, nanoacoustics, and nanophononics refer to the engineering of acoustic phonons and elastic waves at the nanoscale and their interactions with other excitations such a…
Probing Gigahertz Coherent Acoustic Phonons in TiO Mesoporous Thin Films
E. R. Cardozo de Oliveira, C. Xiang, M. Esmann +7
Ultrahigh-frequency acoustic-phonon resonators usually require atomically flat interfaces to avoid phonon scattering and dephasing, leading to expensive fabrication processes, such…
Topological optical and phononic interface mode by simultaneous band inversion
O. Ortiz, P. Priya, A. Rodriguez +3
Interface modes have been widely explored in the field of electronics, optics, acoustics and nanophononics. One strategy to generate them is band inversion in one-dimensional super…
Phonon engineering with superlattices: generalized nanomechanical potentials
O. Ortiz, M. Esmann, N. D. Lanzillotti-Kimura
Earlier implementations to simulate coherent wave propagation in one-dimensional potentials using acoustic phonons with gigahertz-terahertz frequencies were based on coupled nanoac…
Coherent generation and detection of acoustic phonons in topological nanocavities
G. Arregui, O. Ortíz, M. Esmann +7
Inspired by concepts developed for fermionic systems in the framework of condensed matter physics, topology and topological states are recently being explored also in bosonic syste…
Topological acoustics in coupled nanocavity arrays
M. Esmann, F. R. Lamberti, A. Lemaitre +1
The Su-Schrieffer-Heeger (SSH) model is likely the simplest one-dimensional concept to study non-trivial topological phases and topological excitations. Originally developed to exp…
Polarization-Controlled Coherent Phonon Generation in Acousto-Plasmonic Metasurfaces
N. D. Lanzillotti-Kimura, K. P. O'Brien, J. Rho +3
Acoustic vibrations at the nanoscale (GHz-THz frequencies) and their interactions with electrons, photons and other excitations are the heart of an emerging field in physics: nanop…
Topological nanophononic states by band inversion
Martin Esmann, Fabrice Roland Lamberti, Pascale Senellart +6
Nanophononics is essential for the engineering of thermal transport in nanostructured electronic devices, it greatly facilitates the manipulation of mechanical resonators in the qu…
Nanomechanical resonators based on adiabatic periodicity-breaking in a superlattice
F. R. Lamberti, M. Esmann, A. Lemaitre +7
We propose a novel acoustic cavity design where we confine a mechanical mode by adiabatically changing the acoustic properties of a GaAs/AlAs superlattice. By means of high resolut…
Optomechanical properties of GaAs/AlAs micropillar resonators operating in the 18 GHz range
F. R. Lamberti, Q. Yao, L. Lanco +10
Recent experiments demonstrated that GaAs-AlAs based micropillar cavities are promising systems for quantum optomechanics, allowing the simultaneous three-dimensional confinement o…
Tomography of optical polarization rotation induced by a quantum dot-cavity device
C. Antón, C. A. Kessler, P. Hilaire +9
We introduce a tomography approach to describe the optical response of a cavity quantum electrodynamics device, beyond the semiclassical image of polarization rotation, by analyzin…
Acoustic Localization Phenomena in Ferroelectric Nanophononic Devices
A. Bruchhausen, N. D. Lanzillotti-Kimura, B. Jusserand +4
The engineering of phononic resonances in ferroelectric structures appears as a new knob in the design and realization of novel multifunctional devices. In this work we experimenta…
Phonon-tuned bright single-photon source
Simone Luca Portalupi, Gaston Hornecker, Valérian Giesz +8
Pure and bright single photon sources have recently been obtained by inserting solid-state emitters in photonic nanowires or microcavities. The cavity approach presents the attract…