D'Errico, Alessio (2018) Quantum walks and topological phenomena with structured light. [Tesi di dottorato]


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Item Type: Tesi di dottorato
Lingua: English
Title: Quantum walks and topological phenomena with structured light
D'Errico, Alessioderrico@fisica.unina.it
Date: 3 December 2018
Number of Pages: 164
Institution: Università degli Studi di Napoli Federico II
Department: Fisica
Dottorato: Fisica fondamentale ed applicata
Ciclo di dottorato: 31
Coordinatore del Corso di dottorato:
Capozziello, Salvatorecapozzie@na.infn.it
Marrucci, LorenzoUNSPECIFIED
Cardano, FilippoUNSPECIFIED
Date: 3 December 2018
Number of Pages: 164
Uncontrolled Keywords: Quantum walks; Structured light; Orbital Angular Momentum of light; topological phases
Settori scientifico-disciplinari del MIUR: Area 02 - Scienze fisiche > FIS/03 - Fisica della materia
Date Deposited: 14 Jan 2019 15:29
Last Modified: 30 Jun 2020 08:48
URI: http://www.fedoa.unina.it/id/eprint/12464


The manipulation of the spatial structure of a light beam has many application in both classical and quantum physics. The possibility to exploit high dimensional degrees of freedom carried by a light beam can be employed, among the various applications, for simulating the dynamics on quantum particles in multidimensional spaces. Coupling these degrees of freedom, like the orbital angular momentum or the transverse linear momentum, with the polarization of light (also associated with the spin) allows to implement quantum walks on one and two dimensional lattices. This work presents a series of experiments where these implementations of photonic quantum walks were realized exploiting patterned liquid crystal devices. In particular, the experimental setup allows to investigate interesting effects of the non-trivial topological features of the simulated processes, and test methods for the experimental measurement of topological invariants. This research has also led to the introduction of a novel method of characterizing unknown structured light beams and to the study of the stability of polarization singularities in laser beams.


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