Esta tesis expone realizaciones experimentales sobre tres temas desarrolladas en el Grupo de Óptica Cuántica de la PUCP. Primero, tenemos el trabajo sobre tomografía de un estado puro bipartito de camino-polarización, donde se produjeron y caracterizaron dichos estados para luz clásica. Se propuso un método que requiere mediciones estándar de polarización, aun cuando el estado sea bipartito. Se obtuvieron resultados satisfactorios de tres estados con distintas fases y amplitudes. Luego, y también para luz clásica, se presenta la extensión para dos qubits del Teorema de polarización-coherencia (PCT) (Eberly et al., 2017), que involucra la dualidad onda-partícula. Este teorema, que relaciona visibilidad, distinguibilidad y polarización, se extendió luego para el caso donde la polarización actúa como marcador (De Zela, 2018), sin embargo, el qubit de camino no tenía partic...

Esta tesis expone realizaciones experimentales sobre tres temas desarrolladas en el Grupo de Óptica Cuántica de la PUCP. Primero, tenemos el trabajo sobre tomografía de un estado puro bipartito de camino-polarización, donde se produjeron y caracterizaron dichos estados para luz clásica. Se propuso un método que requiere mediciones estándar de polarización, aun cuando el estado sea bipartito. Se obtuvieron resultados satisfactorios de tres estados con distintas fases y amplitudes. Luego, y también para luz clásica, se presenta la extensión para dos qubits del Teorema de polarización-coherencia (PCT) (Eberly et al., 2017), que involucra la dualidad onda-partícula. Este teorema, que relaciona visibilidad, distinguibilidad y polarización, se extendió luego para el caso donde la polarización actúa como marcador (De Zela, 2018), sin embargo, el qubit de camino no tenía partic...

This thesis will be oriented in the study of open quantum systems. The transition of processes that go between the Markovian and non-Markovian regime will be studied. The diagnose of non-Markovianity will be made in terms of the variation of the coherence of the state. Accordingly, an optical setup will be implemented that allows us to manipulate certain degrees of freedom, like the polarization and the optical path. Theoretically, we have found that the coherence of the system is transferred to the environment and it decreases as we move a parameter that we will take as time. This situation has been confirmed in the experiment. Then, due to the second part of the setup, which produces a non-Markovian evolution by also changing one of its parameters, we have accomplished the goal of returning the information back into the system and to measure the non-Markovianity of the process.

This thesis will be oriented in the study of open quantum systems. The transition of processes that go between the Markovian and non-Markovian regime will be studied. The diagnose of non-Markovianity will be made in terms of the variation of the coherence of the state. Accordingly, an optical setup will be implemented that allows us to manipulate certain degrees of freedom, like the polarization and the optical path. Theoretically, we have found that the coherence of the system is transferred to the environment and it decreases as we move a parameter that we will take as time. This situation has been confirmed in the experiment. Then, due to the second part of the setup, which produces a non-Markovian evolution by also changing one of its parameters, we have accomplished the goal of returning the information back into the system and to measure the non-Markovianity of the process.

This thesis will be oriented in the study of open quantum systems. The transition of processes that go between the Markovian and non-Markovian regime will be studied. The diagnose of non-Markovianity will be made in terms of the variation of the coherence of the state. Accordingly, an optical setup will be implemented that allows us to manipulate certain degrees of freedom, like the polarization and the optical path. Theoretically, we have found that the coherence of the system is transferred to the environment and it decreases as we move a parameter that we will take as time. This situation has been confirmed in the experiment. Then, due to the second part of the setup, which produces a non-Markovian evolution by also changing one of its parameters, we have accomplished the goal of returning the information back into the system and to measure the non-Markovianity of the process.