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About

About

Nuno Azevedo Silva graduated in Physics in 2011 at the Faculty of Sciences of University of Porto and concluded is Msc degree in Physics at University of Porto two years later(2013). Following a brief experience under a scientific research grant, he engaged in the MAP-fis doctoral programme and is currently pursuing his PhD in Physics developing his activities at the Centre for Applied Photonics at INESC TEC.  His research interests include both Nonlinear and Quantum Optics, with particular interest in the nonlinear quantum-enhanced optical properties of atomic systems. His past research also included the study of Bose-Einstein condensates and computational Physics, with focus on high performance heterogeneous computing and GPU-accelerated solutions.

Interest
Topics
Details

Details

  • Nationality

    Portugal
  • Centre

    Applied Photonics
  • Contacts

    +351220402301
    nuno.a.silva@inesctec.pt
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Publications

2020

Dissipative solitons in an atomic medium assisted by an incoherent pumping field

Authors
Silva, NA; Almeida, AL; Ferreira, TD; Guerreiro, A;

Publication
Journal of Physics B: Atomic, Molecular and Optical Physics

Abstract

2020

Using numerical methods from nonlocal optics to simulate the dynamics of N -body systems in alternative theories of gravity

Authors
Ferreira, TD; Silva, NA; Bertolami, O; Gomes, C; Guerreiro, A;

Publication
Physical Review E

Abstract

2019

A hardware-independent solution for high-performance simulations of the Maxwell-Bloch system

Authors
Silva, NA; Ferreira, TD; Guerreiro, A;

Publication
Proceedings of SPIE - The International Society for Optical Engineering

Abstract
The interaction of light with matter in near-to-resonant conditions opens a path for the exploration of nontrivial optical response that can play an important role in future photonics-driven technology. But as the attention shifts towards many-level atomic systems and involving multi-dimensional experimental scenarios, the complexity of the physical systems makes the analytical approach to the semiclassical model of the Maxwell-Bloch equations impossible without any strongly-limiting approximations. In this context, robust and high-performance computational tools are mandatory. In this work, we describe the development and implementation of a cross-platform Maxwell-Bloch numerical solver that is capable to exploit the different hardware available to tackle efficiently the problems under consideration. Moreover, it is demonstrated that this simulation tool can address a vast class of problems with considerable reduction of simulation time, featuring speedups up to 30 when running in massive parallel GPUs compared with the same codes running on a CPU, showing its potential towards addressing a large class of modern problems in photonics. © 2019 SPIE.

2019

Exploring dissipative optical solitons controlling gain and loss in atomic systems

Authors
Silva, NA; Ferreira, TD; Guerreiro, A;

Publication
Proceedings of SPIE - The International Society for Optical Engineering

Abstract
Solitons are localized wave solutions that appear in nonlinear systems when self-focusing effects balance the usual pulse dispersion of common optical media. Their stability and particle-like behavior make them ideal candidates for applications that range from communication to optical computing, but in real world physical systems, dissipative processes makes these otherwise stable solutions unstable, and true solitons are particularly hard to observe in systems featuring non-negligible dissipation. In these cases a special type of localized stable solutions, called dissipative solitons, are still possible to obtain, if in addition to a balance between diffraction and nonlinearity, an equilibrium between gain and loss is also present. In this work we discuss theoretically how a 4-level atomic system and an incoherent pumping process can be an ideal experimental testbed for studying this interesting class of solutions, featuring tunable optical properties and controllable gain/loss dynamics that allow to study both classes of temporal and spatial dissipative optical solitons. © 2019 SPIE.

2019

Fluids of light in atomic systems: From superfluidity to quantum simulations

Authors
Silva, NA; Ferreira, TD; Guerreiro, A;

Publication
Proceedings of SPIE - The International Society for Optical Engineering

Abstract
As quantum-driven processes and properties start to shape the future of technology, quantum simulations appear as a crucial piece of the puzzle, acting both as building blocks and catalysts for the improvement of the understanding of unique quantum features. In essence, they can be understood as a class of prototype experiments that allow a study of quantum properties in a controllable environment. In this context, quantum fluids of light are one of the strongest candidates for this role as coherent behavior is easily accessible and not hidden by detrimental thermal noise usually present in more common quantum systems. In this work we explore the underlying theory of quantum fluids of light in propagating geometries through the hydrodynamic interpretation of light, where photons behave as interacting particles in the presence of a nonlinear medium. Exploiting the highly controllable optical properties of atomic systems and their enhanced nonlinear properties related to quantum coherence phenomena, we discuss how they can be used to set a tunable platform for quantum simulations. As examples, we demonstrate a series of quantum features of this light fluid in the form of super fluidic-like behaviors, ranging from the more common and experimentally confirmed suppressed scattering, drag-force cancellation and Bogoliubov-like dispersion relation for the elementary excitations, to other interesting phenomena yet to be explored, such as the case of persistent currents. © 2019 SPIE.