249 citations · 1.5k across the 20 of their papers we have counts for
20 papers
Ordered InAs QDs using prepatterned substrates by monolithically integrated porous alumina
Pablo Alonso-González, María S. Martín-González, Javier Martín-Sánchez +2
In this work, we explore a method for obtaining site-controlled InAs quantum dots (QDs) on large areas of GaAs (0 0 1) pre-patterned surface. The patterning of the substrate is obt…
New process for high optical quality InAs quantum dots grown on patterned GaAs(001) substrates
Pablo Alonso-Gonzalez, Luisa González, Yolanda González +4
This work presents a selective ultraviolet (UV)-ozone oxidation-chemical etching process that has been used, in combination with laser interference lithography (LIL), for the prepa…
Effect of Pt bottom electrode texture selection on the tetragonality and physical properties of Ba0.8Sr0.2TiO3 thin films produced by pulsed laser deposition
J. P. B. Silva, K. C. Sekhar, A. Almeida +5
The effect of platinum (Pt) bottom electrode texture on the tetragonality, dielectric, ferroelectric, and polarization switching response of pulsed laser deposited Ba0.8Sr0.2TiO3 (…
Ordered InAs quantum dots on pre-patterned GaAs (0 0 1) by local oxidation nanolithography
J. Martín-Sánchez, Y. González, L. González +5
Ordered InAs quantum dot (QD) arrays have been obtained on pre-patterned GaAs (0 0 1) substrates by atomic force microscopy (AFM) local oxidation nanolithography. Prior to InAs mol…
Broad Spectral Tuning of Ultra-Low Loss Polaritons in a van der Waals Crystal by Intercalation
Javier Taboada-Gutiérrez, Gonzalo Álvarez-Pérez, Jiahua Duan +17
Phonon polaritons (PhPs) -- light coupled to lattice vibrations -- in polar van der Waals (vdW) crystals are promising candidates for controlling the flow of energy at the nanoscal…
Multiple and spectrally robust photonic magic angles in reconfigurable α-MoO3 trilayers
J. Duan, G. Álvarez-Pérez, C. Lanza +8
The assembling of twisted stacks of van der Waals (vdW) materials had led to the discovery of a profusion of remarkable physical phenomena in recent years, as it provides a means t…
Negative reflection of polaritons at the nanoscale in a low-loss natural medium
Gonzalo Alvarez-Perez, Jiahua Duan, Javier Taboada-Gutierrez +10
Negative reflection occurs when light is reflected towards the same side of the normal to the boundary from which it is incident. This exotic optical phenomenon, which provides a n…
Twisted Nano-optics: Manipulating Light at the Nanoscale with Twisted Phonon Polaritonic Slabs
Jiahua Duan, Nathaniel Capote-Robayna, Javier Taboada-Gutierrez +5
Recent discoveries have shown that when two layers of van der Waals (vdW) materials are superimposed with a relative twist angle between their respective in-plane principal axes, t…
Infrared permittivity of the biaxial van der Waals semiconductor -MoO from near- and far-field correlative studies
Gonzalo Álvarez-Pérez, Thomas G. Folland, Ion Errea +13
The biaxial van der Waals semiconductor -phase molybdenum trioxide (-MoO) has recently received significant attention due to its ability to support highly anisotropic pho…
Strain-tunable Single Photon Sources in WSe2 Monolayers
Oliver Iff, Davide Tedeschi, Javier Martín-Sánchez +10
The appearance of single photon sources in atomically thin semiconductors holds great promises for the development of a flexible and ultra-compact quantum technology, in which elas…
Micromachining of PMN-PT Crystals with Ultrashort Laser Pulses
Giovanni Piredda, Sandra Stroj, Dorian Ziss +4
Lead-magnesium niobate lead-titanate (PMN-PT) has been proven as an excellent material for sensing and actuating applications. The fabrication of advanced ultra-small PMN-PT-based…
Strain-Tunable GaAs Quantum dot: A Nearly Dephasing-Free Source of Entangled Photon Pairs on Demand
Daniel Huber, Marcus Reindl, Saimon Filipe Covre da Silva +7
Entangled photon generation from semiconductor quantum dots via the biexciton-exciton cascade underlies various decoherence mechanisms related to the solid-state nature of the quan…
Strain-Tuning of the Optical Properties of Semiconductor Nanomaterials by Integration onto Piezoelectric Actuators
Javier Martin-Sanchez, Rinaldo Trotta, Antonio Mariscal +13
The tailoring of the physical properties of semiconductor nanomaterials by strain has been gaining increasing attention over the last years for a wide range of applications such as…
Uniaxial stress flips the natural quantization axis of a quantum dot for integrated quantum photonics
Xueyong Yuan, Fritz Weihausen-Brinkmann, Javier Martín-Sánchez +10
The optical selection rules in epitaxial quantum dots are strongly influenced by the orientation of their natural quantization axis, which is usually parallel to the growth directi…
Effects of Dielectric Stoichiometry on the Photoluminescence Properties of Encapsulated WSe2 Monolayers
Javier Martín-Sánchez, Antonio Mariscal, Marta De Luca +8
Two-dimensional transition-metal-dichalcogenide semiconductors have emerged as promising candidates for optoelectronic devices with unprecedented properties and ultra-compact perfo…
Comparison of different bonding techniques for efficient strain transfer using piezoelectric actuators
Dorian Ziss, Javier Martín-Sánchez, Thomas Lettner +5
In this paper strain transfer efficiencies from single crystalline piezoelectric lead magnesium niobate-lead titanate (PMN-PT) substrate to a GaAs semiconductor membrane bonded on…
Influence of strain relaxation in axial (In,Ga)N/GaN nanowire heterostructures on their electronic properties
Oliver Marquardt, Thilo Krause, Vladimir Kaganer +3
We present a systematic study of the influence of elastic strain relaxation on the built-in electrostatic potentials and the electronic properties of axial (In,Ga)N/GaN nanowire he…
Electrically-Pumped Wavelength-Tunable GaAs Quantum Dots Interfaced with Rubidium Atoms
Huiying Huang, Rinaldo Trotta, Yongheng Huo +9
We demonstrate the first wavelength-tunable electrically-pumped source of non-classical light that can emit photons with wavelength in resonance with the D2 transitions of 87Rb ato…
Scalable Sources of Entangled Photons with Wavelength on Demand
Rinaldo Trotta, Javier Martin-Sanchez, Johannes S. Wildmann +8
The prospect of using the quantum nature of light for secure communication keeps spurring the search and investigation of suitable sources of entangled-photons. Semiconductor quant…
Energy-tunable sources of entangled photons: a viable concept for solid-state-based quantum relays
Rinaldo Trotta, Javier Martín-Sánchez, Istvan Daruka +2
We propose a new method of generating triggered entangled photon pairs with wavelength on demand. The method uses a micro-structured semiconductor-piezoelectric device capable of d…