Institut de Ciències Fotòniques: Enviaments recents
Ara mostrant els elements 181-200 de 269
Self-cleaning optical surfaces for the inkjet and 3D printing industry
Liquid and solid repellent surfaces are key to many industries. For example, construction industry benefits from self-cleaning windows, cements, paints, roof tiles, and corrosion resistant surfaces, while easy-to-clean, ...
Exploring flatland nano-optics with graphene plasmons
Plasmons are charge oscillations coupled to electromagnetic radiation. One of their most intriguing properties is their deep subwavelength confinement resulting in strongly enhanced light-matter interaction. Metal plasmons ...
Multi-junction thin film solar cells for an optimal light harvesting
Thin film photovoltaics encompass a group of technologies able to harvest light within a few microns thickness. The reduced thickness allows a low cost of manufacture while making the films flexible and adaptable to ...
Insights on the spatiotemporal organization of integrins and their ligands using quantitative biophysical tools
The migration of leukocytes from the blood stream to sites of injury and infection in the extravascular tissues is fundamental for the immune response. Two of the main receptors mediating this process are the integrins ...
A quantum light-matter interface with Rydberg polaritons in a cold atomic ensemble
Nonlinear optics at the single-photon level enables deterministic photonphoton interaction, a long-standing goal in quantum photonics science. Besides its implication in fundamental aspects of physics, this would unlock ...
Entanglement, Bell’s inequalities and coherence : new ideas and new scenarios
The work presented in this thesis, mostly experimental, is based on three main pillars: the concepts of entanglement, Bell's inequalities and coherence. Entanglement is a very special type of correlation that can exist ...
Micro-nano structured optical devices using Ge2Sb2Te5
Photonic devices are key to implement future communication and information technologies. Their success is largely determined by our capability to appropriately control light in such devices, especially in future reconfigurable ...
Spectral evidence for a condensate of dark excitons in a trap
Spatially indirect excitons, being composite bosons, are attractive candidates to explore correlated many-body systems. They possess an inherent large electric dipole, a four-fold spin manifold, and can be studied via the ...
Thermodynamics and quantum correlations
Thermodynamics traditionally deals with macroscopic systems at thermal equilibrium. However, since the very beginning of the theory, its range of applicability has only increased, nowadays being applied to virtually every ...
Coherent control of nonlinear optical processes in individual nanoparticles
Nanophotonics aims to understand and control the interaction of light-matter at the nanometer scale. Boosted by the development of nanotechnology and nanofabrication, nanophotonics is a thriving research field, with ...
Graphene mechanical resonators coupled to superconducting microwave cavities
In recent years, mechanical resonators based on graphene have attracted considerable interest as nanoelectromechanical systems (NEMS). Graphene NEMSs allow for exceptional properties such as high mechanical strength, high ...
Quantum measurements with cold atomic ensembles
This thesis describes quantum measurements of an ensemble of cold rubidium-87 atoms. We extend the covariance matrix formalism to spin-1 systems, including effects of decoherence, losses due to probing and atom number ...
Optical nanoantennas as cavities : nanoscale control of couplings strength and single photon emission
Optical nanoantennas confine light on the nanoscale, enabling strong light-matter interactions with potential for ultra-compact optical devices. Apart from the direct applications in optical nanoscopy and sensing, nanoantennas ...
Quantum light source compatible with solid-state quantum memories and telecom networks
This PhD thesis is in the scope of experimental quantum communication. It deals with correlated photon pairs of which one photon is stored in a solid state device, while the other photon is at telecom wavelength. Quantum ...
Unravelling 3D cargo transport dynamics at the microtubule network with super-resolution microscopy
Intracellular transport plays an essential role in a wide variety of fundamental cellular processes required to maintain the internal regulation and organization of cells. Different types of cargos such as organelles, ...
Copper indium sulfide colloidal quantum dot solar cells
The ubiquity of solar energy conversion technology is an exciting target which we aspire for in this century. Colloidal quantum dot (CQD) solar cells are an attractive platform, being low-cost and allowing facile control ...
Weak value amplification : new insights and applications
Weak Value Amplification (WVA) is a signal enhancement technique proposed in 1988 by Aharonov, Albert, and Vaidman that has been widely used to measure tiny changes that otherwise cannot be determined because of technical ...
Elliptically polarized light for depth resolved diffuse reflectance imaging in biological tissues
Polarization gating imaging is a popular and widely used imaging technique in biomedical optics to sense tissues, deeper volumes, and also selectively probe sub-superficial volumes. Due to the "polarization memory" effect ...
Quantum metrology with high-density atomic vapors and squeezed states of light
Nowadays there is a considerable progress in optical magnetometry and spin noise spectroscopy, which use magnetically-sensitive atomic ensembles and optical read-out, approaching the limits set by quantum mechanics. In ...
Towards the generation of isolated attosecond pulses in the water window
Attosecond science investigates the realm of processes that happen in fleetingly short passages of time. One attosecond to one second, is what one second is to the age of the universe! Advances in lasers and specifically ...
