Publications (14)
Interference of ultrahigh frequency acoustic phonons from distant quasi-continuous sources
C. Xiang, E. R. Cardozo de Oliveira, S. Sandeep +9
The generation of propagating acoustic waves is essential for telecommunication applications, quantum technologies, and sensing. Up to now, the electrical generation has been at th…
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…
Coherent generation and detection of acoustic phonons in topological nanocavities
G. Arregui, O. OrtÃz, 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 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…
Brillouin Scattering in Hybrid Optophononic Bragg Micropillar Resonators at 300 GHz
M. Esmann, F. R. Lamberti, A. Harouri +9
We introduce a monolithic Brillouin generator based on a semiconductor micropillar cavity embedding a high frequency nanoacoustic resonator operating in the hundreds of GHz range.…
Fiber-based angular filtering for high-resolution Brillouin spectroscopy in the 20-300 GHz frequency range
A. Rodriguez, Priya, O. Ortiz +5
Brillouin spectroscopy emerges as a promising non-invasive tool for nanoscale imaging and sensing. One-dimensional semiconductor superlattice structures are eminently used for sele…
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…
Mesoporous Thin-Films for Acoustic Devices in the Gigahertz Range
N. Lopez-Abdala, M. Esmann, M. C. Fuertes +7
The coherent manipulation of acoustic waves on the nanoscale usually requires multilayers with thicknesses and interface roughness defined down to the atomic monolayer. This result…
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…
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…
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…
Sequential generation of linear cluster states from a single photon emitter
D. Istrati, Y. Pilnyak, J. C. Loredo +14
Light states composed of multiple entangled photons - such as cluster states - are essential for developing and scaling-up quantum computing networks. Photonic cluster states with…
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…
Fiber-integrated microcavities for efficient generation of coherent acoustic phonons
O. Ortiz, F. Pastier, A. Rodriguez +9
Coherent phonon generation by optical pump-probe experiments has enabled the study of acoustic properties at the nanoscale in planar heterostructures, plasmonic resonators, micropi…