Institut de Ciències Fotòniques: Recent submissions
Now showing items 241-260 of 269
Noise assisted effects in physics and biophysics studied by the optical trapping technique
Almost two centuries after the first observations of Robert Brown, the study of systems ruled by noise has become a significant part of modern physics and other so diverse situations, such as the stock market, personal ...
Characterizing and witnessing multipartite correlations : from nonlocality to contextuality
In the past century, experimental discoveries have witnessed phenomena in Nature which challenge our everyday classical intuition. In order to explain these facts, quantum theory was developed, which so far has been able ...
Optical antennas for single emitters
The interaction of light with matter is a central topic in both fundamental science and applied technology. At the heart of this interaction lies the absorption or emission of a photon by an electronic transition in for ...
Continuous-wave optical parametric oscillators and frequency conversion sources from the ultraviolet to the mid-infrared
High-power, continuous-wave (cw) optical parametric oscillators (OPOs), from the ultraviolet (UV) and visible to the near- and mid-infrared (IR) wavelength range, are of interest for a variety of applications such as ...
Soliton generation and control in engineered materials
Optical solitons provide unique opportunities for the control of light‐bylight. Today, the field of soliton formation in natural materials is mature, as the main properties of the possible soliton states are well understood. ...
Nonlocality in multipartite correlation networks
Despite the success of quantum mechanics in predicting the outcomes of experiments in many branches of physics, the foundations of the theory have remained subject of research and dispute. At the basis of this struggle ...
Statistical analysis and plasmonic effects to extend the use of Raman spectroscopy in biochemistry
Since its discovery in 1928, Raman spectroscopy (RS) has produced a revolution in the fields of analytical chemistry and molecular detection. Thanks to the latest technical advances, the expectations of the applicability ...
Optical antennas control light emission
The emission of light is at the heart of both fundamental science and technological applications. At its origin lie electronic transitions in nanoscale materials such as molecules, atoms and semiconductors. The interaction ...
Photon control in nano-structured organic photovoltaic materials
Organic photovoltaic (OPV) technology has emerged as a potential cost-effective solution to produce electrical energy. The foreseen low manufacturing costs combined with features as semi-transparency or mechanical flexibility ...
Intrinsic randomness in non-local theories: quantification and amplification
Quantum mechanics was developed as a response to the inadequacy of classical physics in explaining certain physical phenomena. While it has proved immensely successful, it also presents several features that severely ...
Active control of surface plasmons in hybrid nanostructures
Plasmonics nanostructures are becoming remarkably important as tools towards manipulating photons at the nanoscale. They are poised to revolutionize a wide range of applications ranging from integrated optical circuits, ...
Ultracold atoms in artificial gauge fields
The present thesis studies a variety of cold atomic systems in artificial gauge fields. In the first part we focus on fractional quantum Hall effects, asking whether interesting topological states can be realized with cold ...
Integrated photonic transmitters for secure space quantum communication
An important issue in today's information society is the security of data transmission against potential intruders, which always put at risk the confidentiality. Current methods to increase security require that the two ...
Quantum simulations with ultracold atoms: beyond standard optical lattices
Many outstanding problems in quantum physics, such as high-Tc superconductivity or quark confinement, are still - after decades of research - awaiting commonly accepted explanations. One reason is that such systems are ...
Strategies for pushing nonlinear microscopy towards its performance limits
The requirement for imaging living structures with higher contrast and resolution has been covered by the inherent advantages offered by nonlinear microscopy (NLM). However, to achieve its full potential there are still ...
Ultracold atoms in optical lattices with long-range interactions and periodic driving
This thesis contains theoretical research on ultracold quantum gases in spatially periodic potentials, featuring high-frequency periodic driving, long-range interactions, or both. The largest part features deep potentials ...
Entanglement and non local correlations: quantum resources for information processing
Quantum Information Theory (QIT) studies how information can be processed and transmitted when encoded on quantum states. Practically, it can be understood as the effort to generalize Classical Information Theory to the ...
Localized surface plasmon resonance for biosensing lab-on-a-chip applications
In recent times, metallic nanoparticle plasmonics coupled with applications towards biosensing has gathered momentum to the point where commercial R&D are investing large resources in developing the so-called localized ...
Mechanochemical study of single living cells and biomolecules combining optical tweezers and raman spectroscopy
This thesis is devoted to the study of mechanochemistry of single cells and single biomolecules. Mechanochemistry relates to the association of mechanical and chemical occurrence at the molecular level. Using a combination ...
Device-independent information protocols: measuring dimensionality, randomness and nonlocality
The device-independent formalism is a set of tools to analyze experimental data and infer properties about systems, while avoiding almost any assumption about the functioning of devices. It has found applications both in ...
