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42 papers
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…
Boundary-dominated optomechanics in silicon metamaterial membranes
David González-Andrade, Paula Nuño Ruano, Jianhao Zhang +10
Stimulated Brillouin scattering in integrated photonic waveguides enables coherent coupling between optical photons and gigahertz acoustic phonons, providing a powerful mechanism f…
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…
Structural, magnetic, and nanoacoustic characterization of Co/Pt superlattices
E. R. Cardozo de Oliveira, C. Xiang, C. Borrazás +7
Superlattices presenting a spatial modulation of the elastic properties appear as a main tool to reach the THz regime in nanoacoustic devices. The exploration of alternative materi…
Coupled acoustoplasmonic resonators: the role of geometrical symmetries
Beatriz Castillo López de Larrinzar, Jorge M. García, C. Xiang +2
Acoustoplasmonic resonators, such as nanobars and crosses, are efficient acousto-optical transducers. The excitation of mechanical modes in these structures strongly depends on the…
Polarization-controlled Brillouin scattering in elliptical optophononic resonators
Anne Rodriguez, Elham Mehdi, Priya +3
The fast-growing development of optomechanical applications has motivated advancements in Brillouin scattering research. In particular, the study of high frequency acoustic phonons…
Photonic and phononic modes in acoustoplasmonic toroidal nanopropellers
Beatriz Castillo López de Larrinzar, Jorge M. García, Norberto Daniel Lanzillotti-Kimura +1
Non-conventional resonances, both acoustic and photonic, are found in metallic particles with a toroidal nanopropeller geometry that is generated by sweeping a three-lobed 2D-shape…
Stimulated Forward Brillouin Scattering in Subwavelength Silicon Membranes
Paula Nuño Ruano, Jianhao Zhang, David González-Andrade +6
Brillouin scattering enables efficient and coherent conversion between optical photons and gigahertz-frequency phonons. Integrated circuits that harness this nonlinear interaction…
Elliptical micropillars for efficient generation and detection of coherent acoustic phonons
Chushuang Xiang, Anne Rodriguez, Edson Rafael Cardozo de Oliveira +5
Coherent acoustic phonon generation and detection assisted by optical resonances are at the core of efficient optophononic transduction processes. However, when dealing with a sing…
Effects of surface roughness and top layer thickness on the performance of Fabry-Perot cavities and responsive open resonators based on distributed Bragg reflectors
Konstantinos Papatryfonos, Edson Rafael Cardozo de Oliveira, Norberto Daniel Lanzillotti-Kimura
Optical and acoustic resonators based on distributed Bragg reflectors (DBRs) hold significant potential across various domains, from lasers to quantum technologies. In ideal condit…
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…
Genetic optimization of Brillouin scattering gain in subwavelength-structured silicon membrane waveguides
Paula Nuño Ruano, Jianhao Zhang, Xavier Le Roux +6
On-chip Brillouin optomechanics has great potential for applications in communications, sensing, and quantum technologies. Tight confinement of near-infrared photons and gigahertz…
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…
Towards chiral acoustoplasmonics
B. Castillo López de Larrinzar, C. Xiang, E. Cardozo de Oliveira +2
The possibility of creating and manipulating nanostructured materials encouraged the exploration of new strategies to control electromagnetic properties. Among the most intriguing…
Brillouin Scattering Selection Rules in Polarization-Sensitive Photonic Resonators
Anne Rodriguez, Priya Priya, Edson Cardozo de Oliveira +8
The selection rules governing spontaneous Brillouin scattering in crystalline solids are usually taken as intrinsic material properties, locking the relative polarization of excita…
Surface acoustic wave lasing in a silicon optomechanical cavity
J. Zhang, P. Nuño-Ruano, X. Le Roux +6
Integrated optomechanical cavities stand as a promising means to interface mechanical motion and guided optical modes. State-of-the-art demonstrations rely on optical and mechanica…
Three-dimensional electrical control of the excitonic fine structure for a quantum dot in a cavity
H. Ollivier, Priya, A. Harouri +7
The excitonic fine structure plays a key role for the quantum light generated by semiconductor quantum dots, both for entangled photon pairs and single photons. Controlling the exc…
Generating 10-GHz phonons in nanostructured silicon membrane optomechanical cavity
Jianhao Zhang, Xavier Le Roux, Miguel Montesinos-Ballester +6
Flexible control of photons and phonons in silicon nanophotonic waveguides is a key feature for emerging applications in communications, sensing and quantum technologies. Strong ph…
Silicon-on-insulator optomechanical microresonator with tight photon and phonon confinement
Jianhao Zhang, Xavier Le Roux, Miguel Montesinos-Ballester +5
The implementation of optomechanical devices in silicon-on-insulator (SOI), the canonical silicon photonics technology is seriously hampered by the strong phonon leakage into the s…